Triggered flickering tag

Details Triggered flickering tag Triggered flickering tag

2008-05-20

2008-05-20

Lee, Michael G. (Department: 2876)

Registers

Records

Conductive

C235S451000, C340S005200, C340S005320

Reexamination Certificate

active

11525640

ABSTRACT:
Tags that are associated with an item such as a person or vehicle are caused to optically flicker out an identifying pattern when triggered by a user or a device at an access point (gate, computer, card reader, or the like). The association of the tag and item can include a physical attachment. The flickering light is analyzed and access is permitted if the data key encoded in the flickers is an authorizing code. A lamp such as a laser or LED is used to create the flickers.

REFERENCES:
patent: 6564998 (2003-05-01), Oross et al.
patent: 7025277 (2006-04-01), Forrest et al.
patent: 2004/0205350 (2004-10-01), Waterhouse et al.
patent: 2004/0238625 (2004-12-01), Walker et al.
patent: 2005/0077348 (2005-04-01), Hendrick

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