Dermatoglyph identification apparatus and identifying method thereof

A dermatoglyph identification apparatus, comprising:

• a plurality of sensors, detecting a dermatoglyph;
• a switch circuit, coupled to the sensors;
• and
• a signal source, having a ground terminal and an output terminal, wherein the output terminal is coupled to the switch circuit through an impedance circuit and the ground terminal is coupled to the switch circuit, the signal source generates a reference signal, the switch circuit switches at least one of the sensors to be connected to the output terminal of the signal source through the impedance circuit and switches rest of the sensors to be connected to the ground terminal, the at least one sensor generates a sensing signal in response to the reference signal and the impedance circuit, and the dermatoglyph identification apparatus identifies the dermatoglyph based on the sensing signal.