Importance

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Abstract

A device for protection of computer software installed on hard disks against unauthorized copying and use, and particularly a device of such type that is embedded inside an ordinary diskette cartridge. The device depends mainly in its operation on a VLSI microcontroller embedded inside the diskette and interfaced to a read/write head placed in contact with the surface of the floppy disk. In connection with such device, a method is described to prevent an executable code from being installed on more than one machine, even if several machines are present in the same workplace. The device of the invention is very convenient for the software user. Together with the convenience, it successfully achieves two main objectives: first, preventing the software from getting transferred and used overseas, and secondly, preventing the software from getting transferred to a friend or colleague in the same workplace.

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First Claim