Sharp Kabushiki Kaisha Corporation

Kunio Sensui

Kazuhiro Yamamoto

Yoshiki Shibata

An illegal data use prevention system includes a registrar which issues first authentication information for a game machine reproducing data and second authentication information for a user-identifying IC card. The data is identified by the first authentication information and the second authentication information. The game machine contains the first authentication information and, for example, executes a game program in accordance with a result of determination as to whether the IC card contains the second authentication information. Thus, illegal use of data is effectively prevented.

Growing community of inventors

Chiba, Japan

Kunio Sensui