PORTABLE ELECTRONIC DEVICE AND UNLOCKING METHOD BY ELECTRONIC COMPASS

摘要

A method uses an electronic compass to unlock a portable electronic device. A user can rotate the portable electronic device to set a predetermined rotation direction and a predetermined rotation angle of the portable electronic device for unlocking of the portable electronic device. In an unlock procedure, the electronic compass detects the rotated portable electronic device and outputs detected information of the portable electronic device. If the rotation direction and the rotation angle of the portable electronic device are the same as the predetermined rotation direction and the predetermined rotation angle of the portable electronic device, the locked portable electronic device is unlocked.