PROBLEM TO BE SOLVED: To provide a stylus pen having various restriction functions related to user information input and a function of acquiring additional information through a pen on the pen side. SOLUTION: A stylus pen is attached to a wireless receiver 101, an electrostatic control unit 103 that operates by a received signal, a conductor 105 that propagates a signal to a liquid crystal surface by the electrostatic control unit 103, and a periphery of a conductive band. It has an information acquisition unit 109, an information storage unit 111 that stores the information acquired by the information acquisition unit 109, and a wireless transmitter 113 that transmits the information of the information storage unit 111. [Selection diagram] Fig. 1
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