Time varying identification badge

Details Time varying identification badge Time varying identification badge

1989-05-01

1990-12-25

Oberley, Alvin E.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340784, 34082534, 40 15, 40 16, 235380, 235382, 2353825, G09G 300

Patent

active

049806793

ABSTRACT:
A reusable identification badge having a time varying display with a programmable memory. The configurations exhibited on the display are altered at predetermined time intervals. A specific sequence of configurations, each having visually distinctive shapes or symbols, can be programmed for display on a liquid crystal display panel.

REFERENCES:
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patent: 4646080 (1987-02-01), Genest
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patent: 4801787 (1989-01-01), Suzuki
patent: 4827112 (1989-05-01), Yoshino et al.
"World Awaits LCD Revolution", by Michael S. Malone in Boston Globe, May 25, 1987.
The 60 Second Password; advertisement of access control encryption.

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