PHOTOLUMINESCENT AUTHENTICATION DEVICES, SYSTEMS, AND METHODS
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United States of America Patent
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Feb 9, 2017
app pub date -
Aug 4, 2015
filing date -
Aug 4, 2015
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Abstract
A system and method for authentication includes a photoluminescent label including a photoluminescent material having a decay time, the photoluminescent material being configured to absorb an incident radiation from a radiation source and to emit an emitted radiation having a spectral signature after removal of the radiation source, and a sensor configured to measure the spectral signature in the emitted radiation during the decay time.
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