1. Android Authority. Android jelly bean face unlock liveness check easily hacked with photo editing. http://www.androidauthority.com/android-jelly-bean-face-unlock-blink-hacking-105556/ Mar. 2014. Android Authority. Android jelly bean face unlock liveness check easily hacked with photo editing. http://www.androidauthority.com/android-jelly-bean-face-unlock-blink-hacking-105556/ Mar. 2014.
2. Android Tools. Application exerciser monkey. http://developer.android.com/tools/help/monkey.html Mar. 2014. Android Tools. Application exerciser monkey. http://developer.android.com/tools/help/monkey.html Mar. 2014.
3. On the need for different security methods on mobile phones
4. SilentSense