| 摘要 |
PROBLEM TO BE SOLVED: To provide a game machine that can prevent an unauthorized game from being played.SOLUTION: A game machine stores a deletion program to delete authentication data. When a read-out condition of game information is satisfied, the game machine verifies whether signature data stored together with the game information is data to permit execution of a game using the game information using authentication data. When the signature data is data that cannot permit executing a game, the game machine reads out a program that reads out the deletion program and executes it, and thereby deletes stored authentication data.SELECTED DRAWING: Figure 83 |
