Access control systems
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United States of America Patent
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Jun 7, 2011
Grant Date -
Jul 1, 2004
app pub date -
Apr 30, 2001
filing date -
Apr 30, 2001
priority date (Note) -
In Force
status (Latency Note)
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Abstract
The present invention relates generally to access control. One claim recites a method of determining whether to allow access to a location, including: receiving optical data from an optical sensor, the optical data being associated with an object presented to the optical sensor, wherein the object comprises optically-detectable, machine-readable indicia encoded in a predetermined symbology thereon, the indicia including at least an orientation component; determining an orientation of the orientation component; obtaining from a data store a predetermined orientation; and comparing the predetermined orientation with the determined orientation to decide whether to allow access to the location. Of course, other claims are provided as well.
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