1. A direction controlling system of an electronic device, comprising: at least one processor to execute one or more programs stored in a storage system of the direction controlling system, the one or more programs comprising: a scanning module to capture a sequence of fingerprint images of a finger when the finger moves on a fingerprint identification device of the electronic device; a detecting module to detect if at least two consecutive fingerprint images have blank areas, determine that the finger has moved in a leftward direction or in a rightward direction on the fingerprint identification device if at least two consecutive fingerprint images have blank areas, and to determine that the finger has moved in an upward direction or in a downward direction on the fingerprint identification device if no two consecutive fingerprint images have blank areas and there are no blank images in the fingerprint images; and the detecting module also to detect if there is only one full fingerprint image if there is at least one blank image, to determine that the fingerprint identification device has been tapped if there is only one full fingerprint image, and to determine that the fingerprint identification device has been double tapped if there are at least two full fingerprint images.