Disclosed are an input device, an operation method of an input device, and an electronic device corresponding to the input device. The disclosed input device is located on the outside of a touch screen included in an electronic device, and comprises a first conductive material in which a change in electrical properties occurs on the basis of a touch inputted from a user; and a second conductive material which is electrically connected to the first conductive material and transfers a change in electrical properties to a predetermined position on the touch screen.