System for limiting access to security system program

Details System for limiting access to security system program System for limiting access to security system program

1977-08-26

1978-06-20

Cook, Daryl W.

Registers

Systems controlled by data bearing records

Credit or identification card systems

340 51, G06K 500, G08G 114

Patent

active

040957390

ABSTRACT:
A security system in which access at remote locations is limited to personnel inserting in the system a coded data card, the data of which compares favorably with data stored in a memory. The memory data comprises a table which permits access to selected terminals by selected personnel at selected times. Programming access to the system for the purpose of altering data in the access authorization table is limited to individuals who insert a supervisor's card into the system, which card enables the logic required for altering the authorization table.

REFERENCES:
patent: 3846622 (1974-11-01), Meyer
patent: 3857018 (1974-12-01), Stork et al.
patent: 3988570 (1976-10-01), Murphy et al.

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