Method and apparatus for impeding the counterfeiting of cards, i

Details Method and apparatus for impeding the counterfeiting of cards, i Method and apparatus for impeding the counterfeiting of cards, i

1999-11-05

2000-10-24

Lee, Michael G

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Records

Magnetic

235487, 235489, 235492, 283 72, G06K 1906

Patent

active

061353558

ABSTRACT:
To impede the counterfeiting of a valuable instrument (e.g., a cash card, negotiable instrument or any document), an issuance mark is formed on the instrument at a programmed distance from a reference mark located on the instrument. The information pertaining to the distance is encoded and written onto a storage medium located in the instrument. In a particular system embodying the invention, a card vending machine is programmed to encode cards with various parameters, such as the distance between the reference and issuance marks, by writing the parametric information into an information storage medium located in the card. As a corollary, in a particular system embodying the invention, a dispensing machine is programmed to read the information stored in the information storage medium and the parametric information present in the card and to then compare the stored information with the values of the actual parameters present in the card.

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patent: 4025759 (1977-05-01), Scheffel
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patent: 4630845 (1986-12-01), Sanner
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patent: 4675669 (1987-06-01), Goldman
patent: 5319476 (1994-06-01), Yamazaki et al.
patent: 5354097 (1994-10-01), Tel
patent: 5559885 (1996-09-01), Drexler et al.

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