Registers – Calculators – Input-output calculator to indicator – printer – etc.
Patent
1975-08-05
1977-04-05
Canney, Vincent P.
Registers
Calculators
Input-output calculator to indicator, printer, etc.
340149A, G06K 700, G06K 708
Patent
active
040164047
ABSTRACT:
A credit card having information stored thereon in the form of a matrix of apertures formed through the credit card in a predetermined order, and a verifier adapted to read the information matrix from the credit card and by comparison of the information encoded on the credit card with a comparison code manually entered by a user through a keyboard, determine whether the credit card use is authorized. The verifier generally comprises a processing unit operatively coupled to a random access memory into which the encoded information on the credit card is stored. The processing unit is pre-programmed with the matrix bit positions and the sequence of a scrambler code and the numerical value of the scrambler code is then determined. The processing unit is further pre-programmed to determine the matrix bit positions and the sequence of a user code from the information matrix as a function of the numerical value of the scrambler code so that the numerical value of the user code can be determined. The numerical value of the user code is then compared with the manually entered comparison code and indicating means are activated in response to the comparison to indicate whether the card use is authorized or unauthorized.
REFERENCES:
patent: 3401830 (1968-09-01), Mathews
patent: 3513298 (1970-05-01), Riddle et al.
patent: 3651310 (1972-03-01), Link
patent: 3662343 (1972-05-01), Goldstein et al.
patent: 3665162 (1972-05-01), Yamamoro et al.
patent: 3740530 (1973-06-01), Hotter et al.
patent: 3764742 (1973-10-01), Abbott et al.
patent: 3786420 (1974-01-01), Stambler
patent: 3846622 (1974-11-01), Meyer
patent: 3919528 (1975-11-01), Cooper et al.
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