| 摘要 |
PURPOSE:To provide a storage medium which promotes prevention of the wrong use of software circulated to distribution routes, a reader for software in this storage medium, and a management system which checks the wrong use of software in the storage medium. CONSTITUTION:A hybrid storage medium consisting of an un-rewritable storage area 10 and a rewritable storage area 11 is prepared as the storage medium, and password information of software to be presented is recorded in the unrewritable storage area 10, and password information consisting of key information for deciphering of ciphered software and the permitted frequency in use of software is recorded in the rewritable storage area 11. Meanwhile, the reader reduces the permitted frequency use of the storage medium in accordance with the use of software to inhibit software from being used more than the permitted frequency in use, and the management system checks the wrong use of software in accordance with the display value of the permitted frequency in use of the storage medium. |
