Click Open Settings. Select the display and brightness. Click Close to start the wake-up option. Set this option to off.
Face unlocking is a patented technology that Apple is developing. The system can scan and detect the facial features of users by using the front camera of the device. If users can't be recognized by the system, they will be asked to enter the security code, just like Google's face recognition unlocking technology used in Android 4.0 system.