touch lock is a popular app downloaded over 3 million times. commuters, students, parents and the elderly or any person who has finger trembling disability would find it useful because it allows them to enjoy their device's display without interruption by preventing unintended operations on the touch screen and buttons. features: • call protect - prevent accidental hang up calls by face touching. also prevent pocket answering and dialing calls • lock the screen display • lock virtual or physical keys including home page keys, return keys, volume keys and most recently used app keys • keeps screen on • unlock screen by tapping overlayed icon • (new feature) unlock the screen with device fingerprint reader • wide variety of devices supported. • hidden or show the unlock screen • prevent fa