A touch input method, a terminal contacting a first body part, a non-transitory computer-readable storage medium, and a chipset are provided. The touch input method includes receiving, by a terminal contacting a first body part, a touch input applied by a second body part; measuring a distance between the terminal and the second body part; sensing, by the terminal, whether the second body part contacts the first body part; and determining input information for controlling the terminal, based on the measured distance between the terminal and the second body part and changed information of an electrical signal transmitted from the terminal to the first body part.