There is provided a technology by which the position of 1 pin in a tabless package can be recognized easily. Identification and classification of intuitive hand configurations and motions enables unprecedented integration of typing, resting, pointing, scrolling, 3D manipulation, and handwriting into a versatile, ergonomic computer input device. On the other hand, when the cylinder member has been rotated by a specified angle from a specific direction, the RFID chip and the RFID reader become incommunicable, not making the piston drive mechanism operable.