Multi-light coded electronic security lock

Details Multi-light coded electronic security lock Multi-light coded electronic security lock

1994-07-21

1996-09-03

Hajec, Donald T.

Registers

Systems controlled by data bearing records

Credit or identification card systems

70366, 70277, 70DIG51, 34082531, G06K 500

Patent

active

055525873

ABSTRACT:
The invention herein is a terminal having secured access to data in a computer where such data is segregated and separately identified, access to the terminal being had by a tubular key rotating discs therein to interrupt a sustained light stream into a blinking code to be read by a counter transmitting the code read to the computer making the same operational to release and make operational the particular programs or data identified therein, all being subject to the operation of the terminal within a prescribed time span.

REFERENCES:
patent: 2008150 (1935-07-01), Nelson
patent: 3889501 (1975-06-01), Fort
patent: 4090175 (1978-05-01), Hart
patent: 4322719 (1982-03-01), Moorhouse
patent: 4593185 (1986-06-01), Patzelt et al.
patent: 4838060 (1989-06-01), Hutzenlaub
patent: 5018376 (1991-05-01), Lee

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