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Saturday, 23 September 2017

How does retinal scanning works

How does a retinal scanner works?

retina scanner
A retinal scan relies on unique physiological characteristics of the eye to identify an individual
Retinal scanning is one of the most well-known biometric technologies. A retinal scan relies on unique physiological characteristics of the eye to identify an individual. Before we go into the working of retina scanner let us have a look at what is retina

What is retina?

The retina is a thin tissue composed of neural cells and thin blood vessels that is located in the posterior portion of the eye. The purpose of the retina is to receive light that the lens has focused, convert the light into neural signals, and send these signals on to the brain for visual recognition.
retina scan
Human eye structure
Because of the complex structure of the capillaries that supply the retina with blood, each person's retina is unique. The network of blood vessels in the retina is not entirely genetically dictated. Even identical twins do not share a similar retinal pattern. Retinal biometric exploits this uniqueness.

Working of a retinal scanner

A retinal scan is performed by projecting a beam of low-energy infrared light into a person’s eye as they look through the scanner’s eyepiece This infrared light beam traces a circular path on the retina at the back of the eye. The blood-filled capillaries absorb more of the infrared light than the surrounding tissue. Because of this, there is a variation in the intensity of the reflection.

Instead of storing complete image ,the scanner measures this reflection at difference points along the beam path.
retina scan image
Image of retina and blood vessels
A standard scanner measures reflection at 320 points. It then assigns an intensity grade between zero and 4,095. The resulting numbers are compressed into an 80-byte computer code and stored in data base.We have already seen that retina blood vessel pattern of each person is unique. So chances of spoofing is so little.

Retina scan vs iris scan

Retina scanning is often confused with iris recognition. Even though both rely on unique physiological attributes of the eye to identify an individual,there are certain differences in the way they work.

The iris is a thin, circular structure in the eye, responsible for controlling the size of the pupils and thus the amount of light reaching the retina. The color of the iris defines the eye color.

Iris Recognition uses a camera, which is similar to any digital camera(NIR:Near InfraRed camera), to capture an image of the Iris.

Iris scanner uses mathematical pattern-recognition techniques on images of the irises of an individual’s eyes, whose complex random patterns are unique and can be seen from some distance.

Nowadays iris scan is preferred over retina scan due to its advantages. While the accuracy of retina scan can be affected by diseases; the iris texture remains extremely stable because it is internal and protected, yet externally visible part of the eye.

Retinal scanning advantages and disadvantages

Advantages:
  • Less tampered: Since iris is inside our body chances of tampering is very less.
  • Less chances of theft since it is always inside your body.
  • High accuracy: error rate is one in million
  • Speedy results: Identity of the subject is verified very quickly.
  • They do not require as much computer memory as other biometrics like fingerprint scan, voice recognition etc..
Disadvantages:
  • Invasive:Retina scan requires a very close encounter with the scanning device by using a beam of light deep inside the eye which is considered to be invasive and this may leads to eye problems.
  • Measurement accuracy can be affected by a disease such as cataracts, severe astigmatism
  • Retinal patterns may be altered in cases of diabetes, glaucoma or retinal degenerative disorders,
  • High equipment cost

Application and uses of retinal scanning

Retinal scan security systems: Retinal scanners are typically used for authentication and identification purposes.It is used by several government agencies including the FBI, CIA, and NASA.. Retinal scanning has been used in prisons, for ATM identity verification

Medical application: Retinography or retinal scanning also has medical applications. Communicable illnesses such as AIDS, syphilis, malaria, chicken pox well as hereditary diseases like leukemia, lymphoma, and sickle cell anemia impact the eyes. Pregnancy also affects the eyes. Likewise, indications of chronic health conditions such as congestive heart failure, atherosclerosis, and cholesterol issues first appear in the eyes.

Protect your personal data:Retina scanner phones and Iris scanner phones are already out there in the market. Most of the leading smartphone companies like apple,Samsung,Microsoft prefer iris scan over retina scan.Many app builders are also coming with retina scanner for android. But reliability of such applications are quiet doubtful.

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Thursday, 21 September 2017

Google Tez UPI app:How you can sign up and transfer money?

Google has launched NPCI UPI based payment app Tez.How you can sign up and transfer money?

google tez logoFinally global search giant global has entered Indian booming digital payment industry with the launch of Tez on 18th September.Tez has joined UPI club of PayTM, PhonePe, and the official app BHIM.Each bank has launched their own UPI(Unified Payment Interface) app. But private players are making most out of NPCI(National payments Corporation of India) UPI platform.Each UPI app comes with it's own uniqueness. After the introduction of UPI use of digital wallets has decreased considerably.

Google has also incorporated a bit of innovation in its Tez app.One of the unique features included in Google Tez app is “Cash Mode” which helps you send money without needing the recipient's number or QR codes, instead using an audio matching system.

How to sign-up for Google Tez?

Let us see how one an sign up and use Google Tez UPI app.
goolgle tez upi app sign up process
Tez sign-up process
Step1:Download and Install Google Tez app from Playstore or iTunes
Step2:Open the app and choose the language.
Step3:Enter your phone number (Phone number should be linked with bank A/C)
Step4:Select your email ID
Ste4:Upon verifying mobile number and emaill, you will be asked to select either google PIN or pattern lock for your Tez app
Step5:Set PIN or Pattern lock
Step6:Select your bank
Step7:App will automatically fetch your corresponding bank account linked with your mobile number.
Step8:After fetching bank account you have to set a UPI PIN.If you already have a UPI PIN then enter and proceed. Now you are ready to go.

With Tez on hand what all things you can do?

  • Transfer money between your own bank accounts or with others accounts
  • Pay bills for taxi,hotel or any shopkeeper
  • tansfer money to other user without revealing your bank details or phone number using "Cash
    Mode"
  • Shop online with tez 
  • Earn Tez Scratch Cards to win up to ₹1,000 with each transaction and be eligible to win ₹1 lakh every week with Lucky Sundays. You don’t need to hunt for coupon codes. Just use Tez and if you win, your rewards go straight into your bank account.
  • Tez can do whatever NPCI UPI is capable of

How to use use unique "CashMode" in google Tez app for transferring money?

Step1:After fetching your bank account details ,just launch your app and tap on CashMode button
Step2:If you wish to make payment to nearby user just tap on pay or else if you are receiving payment just tap receive.
google tez cash mode

Step3:App will automatically other tez users nearby through wifi connectivity.This resembles file establishing connection between two users in file sharing apps like 'shareit' or 'xender'.
Google tez fund transfer

Step4:After establishing connection just enter amount you wish to pay and proceed.
google tez cash transfer

How safe Google Tez is ?

  • Secure payments with Tez Shield:The Tez Shield works 24/7 to help detect fraud, prevent hacking, and verify your identity. 
google tez shield

  • Two layer verification with Google PIN and UPI PIN.Each transaction is secured with your UPI PIN and the app is secured with a Google PIN or your screen lock method such as fingerprint. 
  • 24/7 dedicated help center is also for your queries 
Why UPI apps like Google tez,PhonePe etc are preferred over digital wallets.?
 Answer is crystal clear. In digital wallets you need to keep money in your wallet which does not return any interest.But in UPI based app you need not keep money with app. Money will be kept in your bank accounts only, which will be earning regular interest also.UPI application is acting as an agent for transferring money. 
Since India is targeting a digital economy, payments apps like GOOGLE Tez will remain relevant in coming years.
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Sunday, 17 September 2017

Exciting New features of iPhone 8 and iPhone 8 Plus

iPhone 8 and iPhone 8 Plus launched.What are the new exciting features and specs?

Finally iPhone 8 is out.iPhone 8 is available in two variants.iPhone 84.7-inch display and iPhone 8 Plus 5.5-inch display.What is new in iPhone 8 and iPhone 8 Plus?What changes they have from iPhone 7.?
iPhone 8 and iPhone 8 plus
Apple claims,
iPhone 8 introduces an all‑new glass design. The world’s most popular camera, now even better. The smartest, most powerful chip ever in a smartphone. Wireless charging that’s truly effortless. And augmented reality experiences never before possible. iPhone 8. A new generation of iPhone.

Design

iPhone 8 and 8+ features front and back glass design
  • An iPhone formed from glass.Both models iPhone 8 and iPhone 8+ feature a glass back and front. 
  • A colour‑matched, aerospace‑grade aluminium band. 
  • Three new finishes.iPhone 8 comes in three new glass finishes: space grey, silver and gold.
  • Water and Dust Resistant
  • And an oleophobic coating lets you easily wipe off smudges and fingerprints.

Apple A11 Bionic: The fastest six-core mobile processor

iphone 8 and 8 plus A11 bionic processorsThere are two “performance” cores and four “high-efficiency cores” for a total of six.This chip falls under the category ‘heterogeneous computing processor’, which is effectively allows devices to run on processors that have cores of different specifications. This unlike a processor in your PC, where all the processor cores are exactly the same.
  • Speeding up image recognition including biometrics. Apple says it’s the “most powerful, and smartest chip ever in a smartphone”.
  • Compared to  A10 series, Apple claims 25% better performance from those all-important performance cores, while the four high-efficiency cores will collectively be 70% faster for background tasks. What’s more exciting is that the controller, which decides what cores get which tasks, now allows all six cores to work on the same task, allowing for 70% faster multi-threaded workloads.
  • Graphical processor GPU is said to be 30% faster than A10, while consuming half the power.
  • The A11 Bionic includes a faster image signal processor for better camera performance, better pixel processing and better noise reduction.

Dispaly

New 4.7‑inch and 5.5‑inch Retina HD displays.Retina Display is a term developed by Apple to refer to devices and monitors that have a resolution and pixel density so high – roughly 300 or more pixels per inch – that a person is unable to discern the individual pixels at a normal viewing distance.

  • True Tone technology automatically adjusts the white balance to match the light around you. For a better viewing experience in all kinds of environments. So images on the display look as natural as on a printed page, reducing eyestrain.
  • With a wide colour gamut and the best colour accuracy in the industry, everything on the screen looks more brilliant and vibrant.
  • Apple 3D Touch is a hardware-based feature Apple introduced in iPhone 6s and 6s Plus  that perceives the amount of force a user puts on the touch screen to activate different functions.
  • Wide Viewing Angles:Dual‑domain pixels give you a great view of the screen from almost any angle.Dual-domain pixel is a special arrangement of pixels in a display to obtain wide viewing angle.

Wireless Charging

iPhone 8 and 8+ are truly wireless device, free from charging cables and headphone cords. With a glass back and an embedded wireless charging system, iPhone 8 and iPhone+ is designed for a wireless future.
iphone 8 wireless chaging
Apple  devices on wireless charging pad
The intelligent new AirPower mat(coming in 2018) lets you charge your compatible iPhone, Apple Watch and AirPods anywhere on its surface.The AirPower mat uses a new kind of charging standard that supports multi-device charging.
A Wireless World:Charge with wireless charging stations and mats in hotels, cafes and airports around the world

Cameras

iphone 8 plus dual camera
iPhone 8+ features  dual back camera
All‑New Sensor:iPhone 8 features a more advanced 12‑megapixel camera. With a larger, faster sensor. A new colour filter. Deeper pixels. And optical image stabilisation for photos and videos.

The intelligent, Apple‑designed image signal processor detects elements in the scene — like people, motion and lighting conditions — to optimise your photos even before you take them
  • iPhone 8 Plus Dual Cameras:iPhone 8 Plus has a wide‑angle camera with an ƒ/1.8 six‑element lens, optical image stabilisation and a larger, faster 12‑megapixel sensor. It also has a powerful ƒ/2.8 telephoto camera. Together these two cameras enable optical zoom and Portrait mode.
  • Quad-LED True Tone flash with Slow Sync
  • Backside illumination sensor
  • Body and face detection
  • Burst mode
  • 4K video recording at 24 fps

iOs 11

Apple iPhone 8 and iPhone 8 plus run on iOs 11.It makes iPhone better than before.Apple says 'iOS is the most advanced, intuitive and secure mobile operating system in the world.
iphone 8 ios11
iPhone 8 and iPhone 8 plus run on iOs 11
    • The new Files app brings all your files together. You can easily browse, search and organise all your files in one place. And there’s a dedicated place for your recent files.
    • iOS 11 makes it easier and more intuitive than ever to multitask. You can open a second app directly from the Dock and both apps remain active in Slide Over as well as Split View.
    • Augmented reality.:iOS is the world’s largest augmented reality platform. Games and apps now offer fantastically immersive and fluid experiences that go far beyond the screen. By taking advantage of the latest in AR technology, you can digitally redecorate your home, explore a city you’ve never visited or even try on a new tattoo. 
    • Siri:Through advanced machine learning and artificial intelligence, Siri can send a message, set a timer, be your personal DJ and so much more. 
    • AirPlay 2. With the new AirPlay 2, you can control your home audio system and the speakers throughout your house. You can play a song in the living room and your kitchen at the same time. Adjust the volume in any room. Or have your music start instantly on all your speakers — in sync with one another.
    • Do Not Disturb.When you’re driving, just drive:iPhone can now sense when you might be driving and help keep you from being distracted by calls, text messages and notifications. People trying to message you can automatically be notified that you’re driving.
    • QuickType keyboard for one hand typing
    • Automatic Setup:Just hold your new iPhone or iPad near an iOS device to sign in with your Apple ID automatically. Many of your personal settings, preferences and content will be quickly and securely imported.
    There is no doubt that iPhone is the most trustworthy smartphone brand,but Samsung pose a real threat to iPhone models since Samsung has geared up their innovation and competitiveness.iPhone 8 and 8+ are priced at $699 and $799 respectively.But Samsung has already rolled out handsets with above specs for lower price tag.Android is also fast evolving.So demand for iPhone 8 and 8+ is yet to see. As a brand iPhone is always a step ahead but people also love innovations and uniqueness.
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    Monday, 11 September 2017

    New features of Android 8.0 Oreo

    What is new in android 8.0 Oreo?

    Finally much sweeter android 8.0 is out.Android 8.0 Oreo follows Android 7.1.2 Nougat, and it continues Google’s tradition of alphabetically naming its version updates after desserts.Every smartphone enthusiast will be eager to know the new features of Android 8.0 Oreo.
    Android 8.0 Oreo Mascot
    Android 8.0 doesn't have much visible overhauls from it's predecessors.But there are plenty of new useful features.These small small changes make Android version 8.0 an update you don’t want to miss.

    2x faster booting

    Google claims that boot time of Android 8.0 Oreo OS is 2x faster than its predecessors.Get started on your favorite tasks more quickly when powering up.

    Autofill

    Account creation, login, and credit card transactions take time and are prone to errors. Users can easily get frustrated with apps that require these types of repetitive tasks.With your permission, Autofill remembers your logins to get you into your favorite apps at supersonic speed.Think of Google Chrome browser’s autofill option, where it stores your login information or address, and allows you to easily add it into forms.

    Smart Text selection

    Smart Text Selection is also one of those features you won’t appreciate until you use it. We’ve all had to copy an address or phone number from one app, and then open the corresponding app such as Google Maps or your phone dialer to paste it in. Now with Smart Text Selection, when you highlight a phone number, for example, you’ll get the option to jump into the dialer app immediately.

    Picture-in-Picture

    Android 8.0 allows activities to launch in picture-in-picture (PIP) mode. PIP is a special type of multi-window mode mostly used for video playback.
    android 8.0 picture-in-picture
    Picture-in-Picture
    Suppose you are watching your favourite YouTube videos and you want to text your friend without interrupting.This feature it lets you continue watching a YouTube video or a video call when you exit the app. The video now acts like a floating pop-up over the home screen or other app you’re using, allowing you to multitask.

    Notification

    Biggest change in Android 8.0 Oreo that a user will experience is it's redesigned notification behavior and settings.
    • Notification Dots:Press the notification dots to quickly see what's new, and easily clear them by swiping away.
    Android 8.0 provided innovative notification control feture
    • Notification channels: Android 8.0 introduces notification channels(notification categories) that allows user to customize each type of notification you want to display.This feature brings more control over what notifications you see. Press and hold a notification, and you can see a toggle to block all notifications from an app.
    • Notification Snoozing: Users can snooze notifications, which causes them to disappear for a period of time before reappearing.

    Google Play Protect

    Working to keep your device and data safe from misbehaving apps by scanning over 50 billion apps per day, even the ones you haven't installed yet!Even installing apps from outside the Play Store is now a little more secure. If you go to Settings > Security > Google Play Protect, it will tell you when it last checked your app and device for “harmful behavior.”

    Better battery back up

    Whether you're talking, playing, working or streaming, you can feel confident about keeping your battery strong and full of life.Features like Background Location Limits,Background Execution Limits etc.. make this possible.
    • Background Location Limits:In an effort to reduce power consumption, Android 8.0 (API level 26) limits how frequently background apps can retrieve the user's current location. Apps can receive location updates only a few times each hour.
    • Background execution limits:Whenever an app runs in the background, it consumes some of the device's limited resources, like RAM. This can result in an impaired user experience, especially if the user is using a resource-intensive app, such as playing a game or watching video. To improve the user experience, Android 8.0 Oreo imposes limitations on what apps can do while running in the background.

    New Emojis

    Android Oreo new emojis
    Android 8.0 Comes with lot more interesting emojis
    Android 8.0 Oreo is packed with over 60 new emoji.

    Adaptive icons

    Android 8.0  introduces adaptive launcher icons. Adaptive icons support visual effects, and can display a variety of shapes across different device models
    android 8.0 icon shapes
    Android Oreo icon shapes
    Android 8.0 devices allows user to choose  icon shape.A number of options like Square,Rounded Square,Squircle and Teardrop are there to choose from.

    Downloadable fonts

    Applications no longer need to bundle custom fonts, which helps reduce their size.Fonts can be downloaded and installed separately.

    Wi-Fi Aware

    Android 8.0 adds support for Wi-Fi Aware.On devices with the appropriate Wi-Fi Aware hardware, apps and nearby devices can discover and communicate over Wi-Fi without an Internet access point.

    Pointer capture

    Some apps, such as games, remote desktop, and virtualization clients, greatly benefit from getting control over the mouse pointer. Pointer capture is a new feature in Android 8.0  that provides such control by delivering all mouse events to a focused view in your app.

    Integrated printing support

    Android8.0 comes with inbuilt printer support.Android Oreo devices will be compatible with all Mopria-certified printers, which make up 97% of printers sold worldwide.

    Project Treble

    The biggest change to the foundations of Android to date: a modular architecture that makes it easier and faster for hardware makers to deliver Android updates.

    Android 7.0 Nougat’s release in August 2016, the version is only installed on 13.5 percent of Android devices. iOS 10, on the other hand, is installed on 86 percent of devices. When Google rolls out an update, chipmakers, manufacturers, and carriers all need to test it out to make sure nothing breaks, and this process can take months, if not more.Project Treble attempts to mitigate the issue by separating the Android code to make it easier for chipmakers like Qualcomm to find and make sure the software works with its processors.

    For explore more about new feature in Android 8.0 Oreo, visit official site of Android and android developer site . Don't forget to share  'What is new with Android 8.0 Oreo' with your friends.

    Friday, 8 September 2017

    How Does a Computer Mouse Works?

    Working Principle of a Computer mouse

    Every person reading this article undoubtedly have held a computer mouse in your hand.But how many of you wonder how this little device works.Here we have tried to explain 'how does a computer mouse works?'. Computer mouse is a pointing device that detects two-dimensional motion relative to a surface. This motion is typically translated into the motion of a pointer on a display.Mouse is an HID (Human Interface Device) that makes your computer easy to use.Mouse can also be viewed as a cursor control device.

    Types of Computer Mouse

    Mainly there are two types of 'mouses'. Ball mouse(Mechanical mouse) and Optical mouse.

    How does a mechanical mouse work?


    mechanical ball mouse working
    A ball mouse
    How does a ball mouse actually work? As you move it across your desk, the ball rolls and pushes against two plastic rollers(2) mechanically connected to thin wheels (3). One of the wheels detects movements in an back-and-forth direction (say x axis),the other detects side-to-side movements (y-axis).They how they convert this movements into signals?

    when you move the mouse, the ball moves the rollers that turn one or both of the wheels. If you move the mouse straight forward or backward, only the x-axis wheel turns; if you move to the right or left, only the y-axis wheel turns. And if you move the mouse at an angle, the ball turns both wheels at once.

    Each wheel has slots on their edges , as it turns, the slots repeatedly break a infrared/light beam. The more the wheel turns, the more times the beam is broken. Counting the number of times the beam is broken will give how far the wheel has turned and how far you've moved the mouse. The counting,measuring and calibration are done by the microchip inside the mouse, which sends the signals down the cable to your computer. Software in your computer moves the cursor on your monitor by a corresponding amount.

    How Optical mouse works?

    Optical mouse working principle is entirely different from that of mechanical mouse.
    An optical mouse uses a light source, typically a light-emitting diode (LED)/LASER, and a light detector, such as an array of photodiodes, to detect movement relative to a surface.

    Typical optical mouse has three major parts, a light source(LED), light guiding channel(Plastic LENS) and light detector(CMOS array).
    Optical mouse parts and functions
    In most of the optical mouse RED LED is the light source.Plastic light guide(LENS) channels the light from the LED at an angle, down onto the desk. Light-detector chip measures light reflected back up from the desk.This CMOS light detector is a low resolution Camera.

    This CMOS array takes successive images of the surface on which the mouse operates.This successive images will be processed by a DSP(Digital signal processor).Successive images will have only small differences.So, it is possible to determine in which direction mouse has moved by comparing this images.As computing power grew cheaper, it became possible to embed more powerful special-purpose image-processing chips in the mouse itself.
    working of optical mouse
    Illustration of successive images captured by CMOS array
    Assume this is your desktop/mouse pad surface. Let 1,2 and 3 be the images captured by light detector at different instance of time t1,t2 and t3 respectively. If image 3 comes after image 1, we can easily infer that mouse moved towards right side. If image2 follows image1 ,it means mouse has moved towards left.Like this DSP determines direction of movements.

    Other variants of computer mouse

    Inertial and gyroscopic mice:Often called "air mice" since they do not require a surface to operate, inertial mice use a tuning fork or other accelerometer to detect rotary movement for every axis supported
    3D mice:These devices generally function through ultrasound and provide at least three degrees of freedom.

    logitec 3D mouse
    Logitech 3D ultrasonic mouse
    What we have seen here is just an abstract of working principle of mouse.Following reference links will explain the working of mouse in an elaborated way.
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    Thursday, 17 August 2017

    Nokia 8:Use front and back camera simultaneously with it's dual sight mode

    Nokia 8's exclusive Dual-Sight mode lets you use both front and back cameras simultaneously for split-screen photos and video.First in mobile phone,Nokia 8 also features OZO 3D audio technology.

    Nokia 8 comes with dual sight mode enable using front and back camera simultaneously
    Nokia 8 comes with 3 unique features:Dual-sight,OZO audio,and liquid cooling
    HMD Global has launched its latest android phone Nokia 8 with a unique feature.After the reentry Nokia had failed to make an impact in Handset market.But with the launch of Nokia 8,latest in android series,Nokia is on it's way back. Manufactures has come up with an innovative feature called Dual-Sight mode which lets you use both front and back cameras simultaneously for split-screen photos and video.It is surely first of it's kind out there in the handset arena.Can Nokia regain it's past glory?.Let's have a look at the new features of Nokia 8.

    Camera:Be less Selfie. Be more #Bothie.

    Cameras are designed not for selfie lovers,but for #Bothie lovers.Share your moments together.


    Super-slim cameras with ZEISS optics:Nokia 8 features a 13 MP dual image-fusion rear camera with both colour and monochrome sensors, plus a wide-angle 13 MP phase detection auto-focus front camera. Both front and rear cameras are equipped with ZEISS optics, meaning every snapshot moment becomes a story worth sharing.

    Use both front and rear cameras simultaneously with Dual-Sight mode.A first for mobile phones, the exclusive Dual-Sight mode lets you use both front and back cameras simultaneously for split-screen photos and video.

    Live video streaming to Facebook Live™ and YouTube Live with a single touch:Share the moment in the moment with built-in streaming straight to Facebook Live™ and YouTube Live.
    Nokia8 facebook live streaming
    Nokia 8 facebook live
    Record 4K video with Nokia OZO spatial 360° audio:Video is not only about visuals,but also audio too.Experience new dimensions of sound with industry—standard OZO Audio technology tor 360° recording.Audio Focus mode lets you accentuate the right sounds while reducing ambient sounds or
    background noise. Coupled with 4K video capture.Nokia 8 is the first ever phone to feature Nokia OZO spatial 360° audio built in to its core.

    Nokia 8 Hardware

    Chip-set:To maximize performance, Nokia 8 is built upon the cutting-edge Qualcomm® Snapdragon™ 835 Mobile Platform, engineered to deliver exceptionally long battery life and superior graphics performance.

    Liquid cooling: liquid-cooled copper pipe runs across the length of the Nokia 8, with graphite shielding dispersing heat from the Snapdragon chipset throughout the metal shell. it’s the perfect way to keep heat levels to a minimum, and thus – potentially – extend battery life.

    Display:Bright 5.3” 2K polarized display, protected by sculpted Corning® Gorilla® Glass 5
    Memory:4 GB of RAM
    Loads of space with 64 GB mass storage and MicroSD card support up to 256 GB

    Body design:Precision machined from a single block of 6000 series aluminum
    Polished mirror finish

    Nokia8 Android OS and softwares

    Nokia 8 comes with Android Nougat 7.1.1, packed with the full spread of Google's most popular apps and no unnecessary extras. Plus, we’ll make sure you keep getting regular updates to help you stay on top of features and security.
    Unlimited storage with Google Photos.
    Google Assistant, always ready to help:From managing tasks and planning your day to controlling your favourite apps and smart home devices, Google Assistant is ready to help wherever you are.

    Nokia 8 Full spec in Details


    Tuesday, 15 August 2017

    3 most intelligent robots in the world

    Which is the most intelligent robot in the world?

    It is very difficult to answer with certainty. Here let us have a look at some of the smart robots around the world.People love androids(An automaton that resembles a human being).Each one is designed to perform certain task,so it is not fair to compare them.We have picked three robots that anyone love to have.

    1.Honda Asimo

    ASIMO developed by Honda’s R&D subsidiary ,walko city,Saitama Prefecture. Japan is the leader in humanoid robots.Honda began developing humanoid robots in the 1980s, including several prototypes that preceded ASIMO.ASIMO's first version was introduced in 2000.ASIMO stands 130 cm (4 ft 3 in) tall and weighs 54 kg .
    Asimo most intelligent robot
    Honda's ASIMO
    ASIOM’s most innovative feature is it’s advanced intelligence.Robot can think and act its own without human intervention.That is made possible by five sensors that replicate our five sensors.ASIMO’s head contains 8 microphones.It uses it to engage in conversations.It can also distinguish and understand Multiple utterances. That means if two or three people talk simultaneously, ASIMO can distinguish their voice clearly and act accordingly.The robot can detect the movements of multiple objects by using visual information captured by two camera "eyes" in its head and also determine distance and direction.
    ASIMO’s artificial intelligence can analyse vast array of information.That’s how it understands peoples request and take appropriate actions.ASIMO has also sophisticated sense of touch. It’s fingers can make certain movements like a person’s.Sensors are embedded in finger tips too.They can gauge the hardness of an object like human fingers do.Most robots use fixed amount of strength to grab things.But ASIMO exerts more power to open a tightly sealed water bottle and less when holding a paper cup.The developers ultimate goal is for ASIMO to be a valuable partner that co-exist with humans.


    ASIMO’s advanced physical capabilities are revolutionary. Robot can walk and run and it can reach up to 9km per hour.Climbing steps and stairs is an easy task for ASIMO.It can perfectly remain balanced on one leg.ASIMO can shake hands with you and engage in soccer play with you.
    Explore more about ASIMO:Inside ASIMO

    2.Atlas

    Atlas is a humanoid robot developed by the American robotics company Boston Dynamics, with funding and oversight from the United States Defense Advanced Research Projects Agency (DARPA). It was developed for a variety of search and rescue tasks, and was unveiled to the public on July 11, 2013.

    Atlas is latest in a line of advanced humanoid robots Boston dynamic has developed. It weighs 75kg with a height of 1.5m and can carry up to 11 kg of load.

    With it’s 28 hydraulic joints,arms ,legs ,torso head sensors and on-board real time computer ATLAS can sense it’s environment but it can react accordingly.and connecting a fire hose to a valve .Robot’s real time computers and LASERS allow for It’s environment to be sensed and mapped even at long ranges. Atlas' ability to balance while performing tasks allows it to work in a large volume while occupying only a small footprint.

    Atlas robot made by boston dynamics
    Atlas in action
    It is capable of walking over a wide range of terrain, including snow. Atlas keeps its balance when jostled or pushed and can get up if it tips over.

    It uses sensors in its body and legs to balance, and it uses LIDAR(—Light Detection and Ranging—is a surveying method that measures distance to a target by illuminating that target with a pulsed laser light, and measuring the reflected pulses with a sensor.) and stereo sensors(A stereo camera is a type of camera with two or more lenses with a separate image sensor or film frame for each lens. This allows the camera to simulate human binocular vision, and therefore gives it the ability to capture three-dimensional images) in its head to avoid obstacles, assess the terrain, help with navigation, and manipulate objects, even when the objects are being moved.It is also capable of climbing a ladder, starting and driving a car.

    Atlas is intended to aid emergency services in search and rescue operations, performing tasks such as shutting off valves, opening doors and operating powered equipment in environments where humans could not survive.

    3.Cozmo

    Cozmo Is an Artificially Intelligent Toy Truck .A toy truck in the list of most intelligent robots!!!!why?Here is the answer.
    Image result for Cozmo robot wikipedia
    Cozmo
    Cozmo was developed by San Francisco startup called 'Anki' found by Boris Sofman and Hans Tappeiner.It was unveiled in June 2017.

    In the commercial world, robots often work on assembly lines or move stuff across warehouses. But these machines are pretty much hard-wired for specific tasks.In some ways, Cozmo is not quite at the forefront of robotics research. It doesn’t use deep neural networks, an AI technique that promises to reinvent robotics by allowing machines to learn tasks through the analysis of enormous amounts of data. It doesn’t have necessary on-board processing power for this, and since it doesn’t connect to the Internet, it can’t grab this power from distant servers. But using other techniques that aren’t as dependent on data analysis, Cozmo can recognize your face. It can pick up and move a set of blocks. It can mimic emotions. If Cozmo comes to the edge of a table, it might look scared. If it has just lost a game to you, it may pout and look to play with someone else.Other robots use deep neural networks to achieve such abilities. But Cozmo's developers managed to do it with simple algorithm.

    Mobile robots created by Boston Dynamics, and Honda  radiate mechanical charisma.But Cozmo shows its' smartness in interaction with humans and mimicking expressions and feelings. Cozmo has one-of-a-kind personality that evolves the more you hang out.

    Anki’s newly unveiled software development kit—an SDK—that coders can use to tweak the behavior of the toy robot. The company claims the SDK is the first of its kind: a kit that lets anyone program such an intelligent robot, a robot that recognizes faces and navigates new environments and even mimics emotions.
    Cozmo is now a toy. But it’s also the future,a long way to go. Cozmo's capabilities may be limited,but it is good at what it does.
    Artificial Intelligent is gaining momentum and the list of most intelligent robots tends to change rapidly.

    Sunday, 13 August 2017

    Sarahah App:Why it is going viral and how it works?

    Sarahah App:Why it is going viral and how it works?

    sarahah feedback application
    Sarahah Application is a simple way to get honest feedback.
    Over the last few weeks,people are talking of a messaging application, called Sarahah. Sarahah is an anonymous messaging app.You can send messages to anyone on network even without logging in.he Sarahah app is meant for sending and receiving feedback from others, anonymously. Sarahah, means "frankness" or "honesty" in Arabic.So it is an app to share frank and honest feedback..Sarahah developers claims that "Sarahah helps you in discovering your strengths and areas for improvement by receiving honest feedback from your employees and your friends in a private manner".It was developed by Zain al-Abidin Tawfiq from Saudi Arabia .Why Sarahah application is going viral now and how it works?
    The app launched a few months ago, and it's been growing in regions like Egypt and Saudi Arabia,but now it is gaining momentum in India too.The application has already crossed 5 million downloads in playstore.Profile sharing via other social medias like whatsapp and snapchat also contributed to its recent growth.

    Sarahah app - how it works

    After downloading Sarahah application you can create a Sarahah profile, which anyone can visit. Even without logging in, people can visit your profile and leave messages, anonymously. I you are logged in, messages are still anonymous by default, but you can choose to tag your identity.Application need access to your contacts to identify your friends having a Sarahah profile.

    how sarahah application works
    Screen shots of Sarahah
    All the incoming messages show up in an inbox, and you can flag messages, delete them, reply, or favourite them to find them easily later.

    Sarahah app privacy settings

    Sarahah privacy settings
    To improve the user experience from their privacy side, developers have provided privacy settings.
    Privacy features allow you to remove your profile from search results, limiting your audience to people who you share your profile with, and you can also turn off access for unauthorized users .Only people who are logged in will be able to comment. You can also block senders, so even if you can't see the name of the user, they won't be able to send you a message again. 

    How to use Sarahah app

    1.Sarahah is available free on Android and iOS.Download official 'Sarahah' appliaction from Google    playstore or itunes.
    2.Create a profile by providing your Name and email address set your login password.
    3.Set your privacy choice.You can share your profileThat's it ,you are ready to use Sarahah app.
    4.Use search tab to find your friends.
    5.You can also share your Sarahah ID with your friends via whatsapp,facebook,mail,SMS etc.
    6.You can use Sarahah application from your PC also.Visit Sarahah official site               https://www.sarahah.com

    Pros and Cons of Sarahah instant message application

    • Made for a purpose.To share constructive feedback. It helps people self-develop by receiving constructive anonymous feedback
    • Simple Design and user interface.
    • One step profile creation
    • Sarahah's focus is more on messaging and less on social media, and so visiting another users' profile won't show anything.In profile only email and name is mandatory. No other information like age,sex,address etc.. are asked asked for profile creation.
    • It can lead to cyber bullying.But developers have provided options to keep your profile private.There is no option to respond to messages now.
    Hope you understood 'Why Sarahah app is  going viral and how it works?'.Install Sarahah application today itself and see what others are thinking about you.

    Saturday, 12 August 2017

    20 Tips for safe ATM,Debit,Credit card usage

    How to make your Credit/Debit card usage safe and secure?

    As the world moves towards a digital economy, use of Debit card,Credit cards and other other prepaid payment cards are increasing at an accelerated rate.At the same time chances of compromising user data have also increased.Experts say it’s almost inevitable ,this kind of thing will happen again.Don't forget that , fraudsters are also following technology advancements.
    safety tips for debit credit card usage
    On the verge of increases digital payments, every one must have  minimum knowledge in order to make their card credit,debit usage safe and secure
    As financial fraud grows day by day, understanding the basics of debit/credit card protection is more important than ever.
    • .Never store your PIN in the same place as your card; if your card gets stolen, you don’t want a thief to have the PIN as well.
    • Change your PIN frequently.Even if your PIN is leaked at some point of time, changing PIN may reduce your loss.Make it a habit to change PIN frequently.
    • Enable Two tier authentication.For online transaction, enable OTP(One Time password).
    • emv card are safer than magnetic strip cards
      An EMV chip card
    • Replace your Magnetic strip cards with EMV chip cards.Most of the banks have disabled old Magnetic strip cards.If you are still using it, get it replaced by EMV chip cards(EMV chip technology is becoming the global standard for credit card and debit card payments. Named after its original developers (Europay, MasterCard and Visa))
    • Watch for Skimmers in ATMS and POS. There are devices which can skim your card deatil while you use your card in ATMs or POS. Before inserting your cards,give quick check for such devices.
    • Hotlist if you lost your card.If your card is lost,immediately block it.Either contact the bank directly or call the toll free number provided by the card vendor from your registered mobile number.
    • canara mserve app for enabling and disabling card
      Canara Bank's mServe application for enabling and disabling debit/credit cards
    • Temporary lock your card after use.Recently Canara Bank,a leading public sector bank in India has introduced a mobile application 'mServe' ,through which you can switch off and switch on your card.After use you can temporarily lock the card. Next time when you use ,just switch on the card and use it.This will virtually make your card use 100% safe.Nowadays many banks are providing such facilities.
    • Use Secure payment gate ways online.Before entering your card details online,make sure that website url start with 'https' in which 's' stand for secure.These sites use secure encoding for data transfer.Apart from that, use your card only on trusted and well known payment gateways.Never enter your card details on gaming, pornography, lottery, gambling and unsecured websites.
    • Many e-commerce sites like amazon,paytm will prompt you to save your card details online.
    • Never save your card details online.Some online shopping sites may suggest you to save your card details for future payments.
    • Never respond to calls,mails and sms seeking your card information.bank officials or card authorities will never ask your PIN number or OTP.
    • Keep separate  debit card for online payment. Keep minimum amount according to your requirements in the account linked to that card.Even if your card is compromised ,higher loss can be avoided.
    • Activate sms or email alert.It will help detect unauthorized transactions faster.
    • Use more effective password all the time.
    • Disable automatic transfers to linked accounts. Many banks offer customers the option of linking a savings account or line of credit to their checking account, with an automatic transfer of funds if a transaction would trigger and overdraft.If your debit card is used by thieves, this means they can wipe out both of your accounts, so consider temporarily disabling this function.
    • Keep watching your statements. Monitoring your statements for any unfamiliar activity is basic advice.
    • Sign instead of keying in your PIN. Opt for signature over PIN transactions with your debit card. Merchants would prefer that you use your PIN because it’s cheaper for them, which is why most payment terminals are set up with a PIN prompt as a default, but it’s riskier because it gives data thieves the option of creating a fake debit card and hitting the ATM to take out your money.
    • Updates your info with bank.Mobile number,address,email etc.. So that any communication falling in to some other person's hand can be avoided.
    • Secure your devices and networks.Install latest antivirus software and update your OS regularly to avoid any breaches.Avoid Computers like cyber cafes. and public wifi networks.
    • Note down your CVV and tamper it.The CVV number is three-digit, typically imprinted at the end of the signature panel on the reverse of credit (or debit) card.It serves as the authorizing code for the transaction. Experts advise removing the CVV number from the card because other important details (card number or card expiry date) cannot be removed from it. CVV being a small number, it can always be memorised or written in a safe place.
    • Sign on back of your card.Suppose you are making a purchase,the signature line, coupled with a signature on the receipt, allows a retailer to check the signatures,.Unfortunately no retailer does it.


    Don't wait for others to make you safe, be your own guardian.Implement above tips for making your debit/credit card usage more secure.

    Monday, 7 August 2017

    Why it is impossible to completely ban blue whale challenge ?

    It is nearly impossible to ban deadly Blue Challenge,Blue whale is not a game that can be downloaded on PC or mobile

    Deadly blue whale challenge game continuing its spree of takings lives across the world.Its recent victim is a 14 year boy from Mumbai,India. Like other participants he ended up with jumping off the terrace of his flat.
    It is difficult to trace spread of game since its links are not found on playstore or any other site.
    But the Challenge is not a game that can be downloaded on a phone or a website.You can't find a link of blue whale game anywhere on internet.Efforts by cyber experts to locate the game — on Play Store and a series of websites — yielded no results. The challenge can only be undertaken when its creators get in touch with would-be users.

    Deadly Blue Whale is a 50-day-challenge.Blue Whale began in Russia in 2013 with "F57", one of the names of the so-called "death group" of the VKontakte social network(a famous social media network among Russian speaking), and allegedly caused its first suicide in 2015..It is believed that the founder of this deadly game is a 22-year-old Russian, Filipp Budeikin,a former psychology student who was expelled from his university,was arrested last November for allegedly inciting teenagers to take their lives.According Filipp Budeikin challenge aimed at "cleansing society" by eliminating "people who are worthless"by pushing them to suicide those he deemed as having no value.

    The game gives a task a day — each one potentially fatal — to the player for 50 days.

    The game is based on the relationship between the challengers (also called players or participants) and the administrators. It involves a series of duties given by the administrators that players must complete, usually one per day, some of which involve self-mutilation. Some tasks can be given in advance, while others can be passed on by the administrators on that day, the last task being suicide.

    The list of tasks, to be completed in 50 days, includes waking up at 4:20 A.M., climbing a crane, carving a specific phrase on the person’s own hand or arm, doing secret tasks, poking a needle to the arm or leg, standing on a bridge and roof, listening to certain type of music, and watching scary and psychedelic videos sent to the challengers by the administrator. 
    Th administrators of the game reach out to their victims through different social medias like Instagram,Facebook,WhatsApp or any other online forums.Victims are selected based on their recent social media posts and activities. If your posts speak that you are 'feeling lonely' or ''depressed' ,then you are the perfect target.They will collect maximum personal details about you ,so that they can easily push you towards suicide  through blackmailing or other sort of psychological approaches. 

    A journalist from NB Bishkek news (Kyrgystan) writes in a personal account on the website about registering on Instagram as a teenage girl, then making "a couple of naive posts, depressive photos" and specific tags.
    "After a day, they knocked. — Are you in Game? — Yes," the journalist writes on NB Bishkek news.

    Teenagers are prime targets of this challenge.Why? ,they are willing to do anything to prove/justify/live up to a certain image. During adolescence risk taking behaviour is in its peeks. It is the age during which one seeks his own identity and role in the society and family. To get others attention they will take any risk.

    A report by Radio Liberty, a US government-funded broadcasting organisation, said one of their correspondents who had signed up for the challenge as a 15-year-old asked what would happen if she wanted to get out.
    The curator replied, "I have all your information. They will come after you."

    Instagram and Facebook have come up with measures where a user is directed to a help page when they search for hashtags related to the Blue Whale Challenge.
    "Posts with words or tags you're searching for often encourage behaviour that can cause harm and even lead to death"
    Facebook search result  for 'Blue Whale'
    Facebook suggests three ways to get through your difficult times
    Today,internet is accessible to even small kids.Parents need to monitor their children's interests on Internet,and show them real world instead of allowing them to immerse in virtual world.

    Friday, 4 August 2017

    'Facebook researchers shut down AI bots after they developed their own language':Reality or Hype?

    'Facebook researchers shut down AI bots after they developed their own language'.This was the sensational news of the last week.

    This news, in some people’s minds brought up images of Skynet, the fictional AI network in the Terminator film series that became self-aware and set out to destroy the human race in the interests of self-preservation or iRobots,intelligent robots who turn against their own creators for self interests.
    But AI(Artificial Intelligence) is that much advanced??


    Image result for face book shutdown it AI bots
    Here is the abstract of the story that appeared in leading online news channels.
    Facebook abandoned an experiment after two artificially intelligent programs appeared to be chatting to each other in a strange language only they understood.
    The two chatbots came to create their own changes to English that made it easier for them to work – but which remained mysterious to the humans that supposedly look after them.
    The bizarre discussions came as Facebook challenged its chatbots to try and negotiate with each other over a trade, attempting to swap hats, balls and books, each of which were given a certain value. But they quickly broke down as the robots appeared to chant at each other in a language that they each understood but which appears mostly incomprehensible to humans.
    The robots had been instructed to work out how to negotiate between themselves, and improve their bartering as they went along. But they were not told to use comprehensible English, allowing them to create their own "shorthand", according to researchers.(Read it own independent.co.uk)
    Chat was like this :

    Bob: i can i i everything else . . . . . . . . . . . . . .
    Alice: balls have zero to me to me to me to me to me to me to me to me toBob: you i everything else . . . . . . . . .

    Alice: balls have a ball to me to me to me to me to me to me to me

    Bob: i i can i i i everything else . . . . . . . . . . . . 

    Alice: balls have a ball to me to me to me to me to me to me to me

    Bob: i . . . . . . . . . . . . . . . . . . .

    Alice: balls have zero to me to me to me to me to me to me to me to me to
    Bob: you i i i i i everything else . . . . . . . . . . . .
    Alice: balls have 0 to me to me to me to me to me to me to me to me to
    Bob: you i i i everything else . . . . . . . . . . . . . .
    Alice: balls have zero to me to me to me to me to me to me to me to me to

    This conversation occurred between two AI agents developed inside Facebook. At first, they were speaking to each other in plain old English. But then researchers realized they’d made a mistake in programming.

    This is what facebook AI researchers telling about AI negotiating agents.
    Two agents are both shown the same collection of items (say two books, one hat, three balls) and are instructed to divide them between themselves by negotiating a split of the items.
    “Agents will drift off understandable language and invent codewords for themselves,” says Batra, speaking to a now-predictable phenomenon that’s been observed again, and again, and again. “Like if I say ‘the’ five times, you interpret that to mean I want five copies of this item. This isn’t so different from the way communities of humans create shorthands.”

    But is there anything thing to panic about that?

    FB AI study’s lead author, Michael Lewis, told snopes.com
    "While they were initially trained to communicate in English, in some initial experiments we only reward them for achieving their goal, not for using good English. This meant that after thousands of conversations with each other, they started using words in ways that people wouldn’t. In some sense, they had a simple language that they could use to communicate with each other, but was hard for people to understand. This was not important or particularly surprising, and in future experiments we used some established techniques to reward them for using English correctly. There have also been a number of papers from other research groups on methods for making AIs invent simple languages from scratch.
    There was no panic, and the project hasn’t been shut down. Our goal was to build bots that could communicate with people. In some experiments, we found that they weren’t using English words as people do — so we stopped those experiments, and used some additional techniques to get the bots to work as we wanted. Analyzing the reward function and changing the parameters of an experiment is NOT the same as “unplugging” or “shutting down AI.” If that were the case, every AI researcher has been “shutting down AI” every time they stop a job on a machine.

    These AI ChatBots where designed to negotiate with humans. But they started to deviate from their task.They should have communicate with each other like they communicate with a human being.Actually this was nothing but a glitch in program. But medias out there were talking like "they invented their own secrete language with the intention of cheating human ". Project hasn’t been called off.It will be continued with required modifications.

    This news was actually a clickbait. Media always want sensationalism, for that they use attractive and terrifying headlines with much hype.

    Leading tech companies like Apple, Amazon, Google, IBM and Microsoft are having their own team for Artificial Intelligence and Machine learning researches.
    Artificial intelligence is great, but it needs some ethical supervision in order to benefit everyone.A Partnership on AI was officially unveiled back in September 2016. At the time, Amazon, Facebook, Google, IBM and Microsoft were the only founding members. Later companies like Apple,Twitter joined them.The companies could write about ethics, inclusivity and privacy as these are hot topics.

    Right now,people are terrified of AI project and nightmarish scenarios around it.But what everyone fails to appreciate is that human beings are the most adaptable, clever, and aggressive predators in the known universe.The best survivors. Artificial Intelligence and Machine learning are in infant stages now. Even if some machines gone mad, we will have a solution then.
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