| 摘要 |
PURPOSE:To prevent an onerous software from being illegally used by providing a floppy disk with a software copy checking program and collating a checked result with previously stored identification (ID) information. CONSTITUTION:A magnetic tape storing different ID information in each floppy disk is embedded in a case of the floppy disk. The same ID information as the one stored in the magnetic tape is stored in the floppy disk and an onerous software is recorded on the medium. In case of executing the software in the floppy disk, the ID information is read out and collated with the previously stored ID information, and when both the values coincide with each other, the onerous software is allowed to be accessed. In case of discrepancy as the collated result, access to the floppy disk is inhibited. |
