Security means for transaction terminal system

Details Security means for transaction terminal system Security means for transaction terminal system

1975-08-14

1977-05-24

Kilgore, Robert M.

Registers

Calculators

Input-output calculator to indicator, printer, etc.

235151, 340149A, 356 71, G06F 1520, G06K 908, G06K 700, H04Q 254

Patent

active

040257606

ABSTRACT:
A transaction terminal system is provided including means which prevent the utilization of certain tapped-line data. Security data, such as personal identification numbers or card security codes, is allowed to be distorted by each terminal in a manner which varies from terminal to terminal within the system and is corrected for at the data processor or other appropriate location in a manner specified for the particular terminal sending the data.

REFERENCES:
patent: 3513298 (1970-05-01), Riddle
patent: 3593008 (1971-07-01), De Witt
patent: 3611293 (1971-10-01), Constable
patent: 3612687 (1971-10-01), Cook
patent: 3648243 (1972-03-01), Wiggins
patent: 3665162 (1972-05-01), Yamamoto
patent: 3846622 (1974-11-01), Meyer
patent: 3956615 (1976-05-01), Anderson

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