PORTABLE ELECTRONIC DEVICE AND UNLOCKING METHOD THEREOF

摘要

A method executes an altimeter function to unlock a portable electronic device. A user can move the portable electronic device in an up-down direction to set a predetermined changed height for unlocking the portable electronic device. In an unlock procedure, an altimeter detects a changed height of the portable electronic device and outputs detected information of the portable electronic device. If the changed height is the same as the predetermined changed height, the locked portable electronic device is unlocked.