Can distinguish between living and photo Jelly bean system face unlock function enhanced

Facial recognition unlocking is a security feature introduced by Ice Cream sandwich, which is a very interesting concept, but not very reliable. For example, you can unlock the photos, the phone is not able to distinguish the face and photos, and when repeatedly unlocked failure will not automatically lock. In order to solve the above problems, Google Jelly Bean's facial unlock function has made some adjustments, joined the liveness check option, as the name suggests, is to ensure that the face of the mobile phone is a living person rather than a picture. Liveness check will require the user to blink when making facial recognition, we all know that the photo will not blink, so theoretically speaking, the security of facial unlocking is improved. In addition, the Jelly Bean's face unlock feature will lock the user after repeated recognition of the failure. Once the user is locked out, it is not possible to simply start the face unlocked via the power button, and must pass the standby unlock method previously set. With the above adjusted face unlock function is more reliable, but liveness check also reduces the speed and accuracy of the lock, after all, the phone needs to find the user's eyes, and recognize the blink of an action. Lucky friends who have already used the jelly bean system now need to unlock the face as usual and check liveness check to get a more reliable unlocking capability than before.