Last year, when Google announced Android 4.0 Ice Cream Sandwich, one of the highlights of the operating system update was that one could unlock their handsets with their face using a face recognition mechanism called Face Unlock. This was a neat concept as opposed to punching in a code or using a pattern to unlock your device.
However, this system did come with its security vulnerabilities as a person could unlock a handset with a photograph.
This was a major threat to the security of your phone since most of the people activate this feature without thinking about this security vulnerability.
With the JellyBean release of the Android, Google has improved the face unlock feature with a mechanism called a “liveness check”.
With this feature the system will make sure the person in front of the camera is alive or not i.e. it will check if the person in front is blinking or not.
This will make sure that photograph of you will not be able to unlock your JellyBean phone and it will improve the security.