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Authentication reader and a dispenser comprising the authentication reader

  • US 9,999,323 B2
  • Filed: 09/19/2017
  • Issued: 06/19/2018
  • Est. Priority Date: 05/27/2011
  • Status: Active Grant
First Claim
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1. An authentication reader for authenticating a product having a fluorescent taggant ink disposed upon a surface of the product, the reader comprising:

  • a signal generator comprising an excitation source that provides a light source having a source wavelength or wavelengths for exciting the fluorescent taggant ink to produce a signal response of emitted light from the fluorescent taggant ink, wherein the signal response of emitted light comprises a spectrum of intensity peaks at multiple wavelengths and the multiple wavelengths are different from the source wavelength;

    a RGB sensor for receiving the signal response of emitted light from the fluorescent taggant ink comprising output channels for the R, G, and B components and the total signal intensity of the signal response;

    a filter, positioned between the signal generator and the RGB sensor, for blocking the source wavelength or wavelengths from the sensor; and

    control circuitry coupled to the signal generator, the RGB sensor and a database containing data corresponding to signal responses associated with taggant ink, wherein the control circuitry compares the signal response with the data of an expected signal response stored in the database to determine if the signal response matches an expected signal response in the database, and positively authenticate the product as authentic when the signal response matches the data.

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