Identification particles and system and method for retrospective identification using spectral codes
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United States of America Patent
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May 2, 2006
Issued Date -
N/A
app pub date -
Dec 17, 2001
filing date -
Apr 1, 1999
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Abstract
A system and method using reporter elements provides retrospective identification of articles. An article is marked with reporter elements such that the mark has a characteristic spectral response when exposed to energy stimulation. To verify the authenticity of the article, a reader scans the mark containing the reporter elements and obtains a spectral signature. The reader then compares the detected signature to the characteristic signature to determine the authenticity or identity of the marked article.
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