| 摘要 |
<p>A method for preventing an unauthorized copy application program execution in which a product produced by an unauthorized copying is made unusable. When the type of recording medium being used is identical to the type of the specified medium written into the application program, the recording medium being used is a correct product and the main program is normally executed. In case of an unauthorized copy product copied on a recording medium of a type different from the specified type of product, a mismatch processing program is executed.</p> |
