Three-dimensional authentication of mircoparticle mark
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United States of America Patent
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Jul 17, 2012
Grant Date -
Jan 27, 2011
app pub date -
Oct 6, 2010
filing date -
Mar 13, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A system, method, and apparatus for authenticating microparticle marks or marks including other three-dimensional objects. The authentication utilizes two or more sets of information captured or acquired for the mark in response to illumination of the mark by electromagnetic energy such as in the visible frequency range. These sets of information are then used to verify that the mark includes three-dimensional objects such as microparticles. The two or more sets of information about the mark preferably vary from each other in time, space/directionality, color, frequency or any combinations thereof, and can be captured or acquired as part of one, two, or more images of the microparticle mark.
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