Programmable keyboard sequencing for a security system

Details Programmable keyboard sequencing for a security system Programmable keyboard sequencing for a security system

1977-09-01

1979-02-27

Cook, Daryl W.

Registers

Systems controlled by data bearing records

Credit or identification card systems

340149R, G06K 500, H04Q 302

Patent

active

041420977

ABSTRACT:
A security system in which personnel are permitted access at certain locations on the basis of data magnetically encoded on a card inserted into the system by the personnel. Access is also limited on the basis of keyboard data entered at the remote location by personnel wishing access. The keyboard data required for entry is a permutation and combination of the data on the employee's card, the particular combination and permutation required at each remote location being independently programmable by switches accessible on the inside of the remote security system.

REFERENCES:
patent: 3665162 (1972-05-01), Yamamoto et al.
patent: 3697729 (1972-10-01), Edwards et al.
patent: 3794813 (1974-02-01), Spetz
patent: 3846622 (1974-11-01), Meyer
patent: 3996450 (1976-12-01), Kerkhoff
patent: 4023012 (1977-05-01), Ano et al.

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