G - Physics – 07 – F
Patent
G - Physics
07
F
354/37, 352/50,
G07F 7/10 (2006.01) G07F 7/08 (2006.01) G11B 20/10 (2006.01)
Patent
CA 1207459
ABSTRACT Credit cards to be used with automated systems such as vending machines or the like have various identification and other data encoded on them for use with a particular system for which they are intended. To prevent persons familiar with the system operation and the manner of encoding data on such credit cards from developing unauthorized cards which will work in the system, a random number generator is used to produce a mask for relocating the bits of encoded data in a random manner to various locations on the credit card. This mask is stored in a microprocessor memory and is used both in encoding and decoding such cards
445787
El-Kilani Saddah
Gregor William T.
Roth Richard W.
Sherwood Michael D.
Snyder Kenneth D.
Engineered Systems Inc.
Gowling Lafleur Henderson Llp
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