Registers – Systems controlled by data bearing records – Credit or identification card systems
Patent
1979-01-22
1980-06-17
Cook, Daryl W.
Registers
Systems controlled by data bearing records
Credit or identification card systems
340149A, G06K 500, H04Q 300
Patent
active
042085756
ABSTRACT:
A validator checks the identity of the holder of a credit card or check by comparing a secret code number derived from the holder with a number derived from the serial number of the credit card or check. The basic components of the validator are a keyboard, a scrambler circuit and a comparator circuit. The scrambler circuit is responsive to the keyboard for receiving a serial number or other indicia from the card as punched into the keyboard. Then a key is pressed to signify end of the card indicia and to switch the keyboard output to the comparator circuit. A number offered by the user is punched into the keyboard; and if the number is correct, the comparator circuit is actuated to indicate validity. Such a machine can use any existing credit card, check, or identification card having a serial number; can operate on serial number and letter combinations of any length; and can operate in a way that is undecipherable for practical purposes.
REFERENCES:
patent: 3387265 (1968-06-01), Smeiman
patent: 3439339 (1969-04-01), Parks
patent: 3643064 (1972-02-01), Hudson, Jr.
patent: 3648021 (1972-03-01), Rogers
patent: 3654522 (1972-04-01), Isserstedt
patent: 3656110 (1972-04-01), Crane
patent: 3665162 (1972-05-01), Yamamoto et al.
patent: 3846622 (1974-11-01), Meyer
patent: 3906201 (1975-09-01), Housman et al.
patent: 4016404 (1977-04-01), Appleton
patent: 4023012 (1977-05-01), Ano et al.
Cook Daryl W.
Valmet Corporation
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