Optical key and lock code authentication
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United States of America Patent
Stats
-
Aug 6, 1996
Issued Date -
N/A
app pub date -
Aug 11, 1994
filing date -
Nov 23, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In an electrical switch which includes a key for its operation. The key includes a code which is specific to a specific switch. The switch includes illumination means for illuminating the key carried code, a scanning device for reading the key code, electronic circuits for comparing the key code with the proper key code for that specific lock, and responding to a correct key by allowing the switch to close electrically or to an incorrect key which prevents the switch from closing electrically and can turn on an alarm.
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