| 摘要 |
PROBLEM TO BE SOLVED: To detect fraudulence more accurately in a game machine including abnormal magnetism detection means for detecting generation of abnormal magnetism.SOLUTION: In a game machine, based on power-on of the game machine, reference magnetic state storage processing is started to store a present magnetic state as a reference magnetic state, reference magnetic state re-storage processing for storing the current magnetic state in reference magnetic state storage means as a new reference magnetic state is started in satisfaction of predetermined conditions after power-on of the game machine, and start timing of the reference magnetic state re-storage processing can be controlled by arithmetic processing means. |
