Google introduced Face Unlock in Android 4.0 Ice Cream Sandwich . The feature allows users to unlock their phones with a face, or by swiping up from the bottom of the screen. It acts as an alternative to screen locks involving a pattern or a PIN .
Google introduced Face Unlock in Android 4.0 Ice Cream Sandwich . Now rolling out new voice unlock feature to users . It acts as an alternative to screen locks involving a pattern or a PIN .