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System and method for providing tangible medium with electromagnetic security marker

  • US 9,159,016 B2
  • Filed: 03/14/2014
  • Issued: 10/13/2015
  • Est. Priority Date: 03/14/2013
  • Status: Active Grant
First Claim
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1. A secure medium comprising:

  • a detectable element laminated between layers of a medium; and

    printed authentication elements on a surface of the medium, wherein at least a part of the printed authentication elements is provided on top of the detectable element,wherein the printed authentication elements are visible in a first color under a first lighting condition, and the printed authentication elements are visible in a second color under a second lighting condition.

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