Boots – shoes – and leggings
Patent
1989-04-27
1992-10-13
Shaw, Dale M.
Boots, shoes, and leggings
3649181, G06F 1500
Patent
active
051556804
ABSTRACT:
A computer software security and billing system is disclosed in which the application program is enciphered in accordance with an algorithm driven by a numeric key. The user's computer is provided with a hardware security module and a removable billing module, both of which carry unique codes. A security program accesses the application program and also writes information about billing into the billing module. The billing module is periodically replaced so the user can be charged based on amount of usage of the software. The security system is also capable of operating to provide data and program security independent of the billing function.
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Freedman, "Foiling Corporate Software Pirates," High Technology, Jul. 1985, pp. 62-64.
Brutman Laura
Shaw Dale M.
Signal Security Technologies
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