| 摘要 |
The object of the present invention is to implement, by a simple arrangement, means for making the same information recording medium function selectively as a product version or as a demo version, and to provide a method of information processing whereby illicit use by a third party can be prevented. In a method of information processing according to the present invention, game software (a CD ROM) on which a game program is stored is inserted into a game device (step A1), and the content of back-up memory is read (step A2). A determination is made as to whether or not license information is written in the back-up memory (step A3) and, if no license information is written therein, the game software is made to function as the demo version (step A8). If license information is written therein, license checking is performed (step A4) and, as a result of the checking, the game software is made to function as the product version or as the demo version (steps A6, A7).
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