Automated data card payment verification method

Details Automated data card payment verification method Automated data card payment verification method

1994-11-15

1995-12-26

Gregory, Bernarr E.

Cryptography

Particular algorithmic function encoding

Nbs/des algorithm

380 22, 380 23, 380 25, 380 49, 235379, 235380, 34082531, 34082534, 379 91, 379 93, H04L 932

Patent

active

054795109

ABSTRACT:
A method of data transmission over existing telephone lines and later verification of that transmission includes electronic payment verification using telephone transmission of payment information and return transmission of a unique card account number, storage of the information and account number on a database and a data card through a data storage device, and verification of the infomation and account number at a later time by a separate data storage device and the same database.

REFERENCES:
patent: 4578530 (1986-03-01), Zeidler
patent: 4656342 (1987-04-01), Ugon
patent: 4733060 (1988-03-01), Dono et al.
patent: 4734564 (1988-03-01), Boston et al.
patent: 4755940 (1988-07-01), Brachtl et al.
patent: 5012076 (1991-04-01), Yoshida
patent: 5144115 (1992-09-01), Yoshida

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