Electronic device unlocked and controlled by gesture recognition

An electronic device, comprising:

• an image sensor, configured to output an image frame for detecting a human face image;
• a gesture sensor, configured to generate a gesture detection signal;
• and
• a processor, configured to
• recognize whether any facial feature of a human face is covered by an object or not according to the human face image,
• recognize a gesture combination according to the gesture detection signal after no facial feature of the human face is recognized being covered, and
• unlock a digital electronic lock of the electronic device when the gesture combination is recognized matching a predetermined condition to replace unlocking the digital electronic lock by physiological characteristics,
• wherein the gesture combination comprises a static two-hand gesture staying for a predetermined seconds to unlock the digital electronic lock.