Face Unlock has been a bit of a novelty ever since Google introduced it in Android 4.0, but any sense of security offered by the feature disappeared once it was revealed that it could be easily tricked by a photograph. For Google's part it has always labeled the option as "low-security" and "experimental," but it has now taken a step to stop photo-equipped thieves with a new "Liveness Check" that requires a user to blink before granting access to the phone. The search company has taken a page out of Samsung's book by rolling out the blink-recognition technology, but don't let the change fool you into trusting face unlock just yet. We've seen the system let in two vaguely similar-looking people through the lock screen before, so you're still safer using a PIN for now.
Android 4.1 Jelly Bean 'Liveness Check' hopes to stop Face Unlock from being fooled by photos
Android 4.1 Jelly Bean 'Liveness Check' hopes to stop Face Unlock from being fooled by photos/
Android 4.1 features a "Liveness Check" feature to Face Unlock that requires users to blink before gaining access to the phone.