4. Choose a backup unlock method to use in case the phone doesn't recognize
you.
5. Tap Lock phone after, and then specify the idle time before the screen is locked.
To help make face unlock more reliable and more secure, you can:
§ Tap Improve face matching to train HTC One X to recognize your face in
different situations, such as when you're wearing glasses or sporting a beard.
§ Select the Liveness check option and you will be asked to blink to unlock the
screen.
78 Personalizing