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Optically variable security device, and article employing same and method for verifying the authenticity of an article

  • US 9,666,008 B2
  • Filed: 08/11/2010
  • Issued: 05/30/2017
  • Est. Priority Date: 09/01/2009
  • Status: Active Grant
First Claim
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1. A method for verifying the authenticity of an article, comprising the steps of:

  • providing a production master plate being structured to produce from one impression a plurality of security devices, each having a different optically variable security code;

    producing a plurality of security devices from the impression of the production master plate, each of said plurality of security devices comprising;

    an optically variable security code different from optically variable security codes of others of the plurality of security devices produced from the impression of the production master plate, the optically variable security code comprising a plurality of individual elements, including a first element and a second element, wherein at a first predetermined observation point the first element is visible and the second element is not visible, and at a second predetermined observation point the second element is visible and the first element is not visible; and

    a unique serial number, the unique serial number being disposed on a first portion of a corresponding one of the plurality of security devices and the optically variable security code being disposed on a second portion of the corresponding security device,providing a first security device from the plurality of security devices for affixing to an article;

    recording the associated security code and serial number of the first security device in a database;

    receiving an authentication request from a user of the article;

    sending an authentication report to the user;

    wherein the authentication report informs the user whether authentication is confirmed; and

    wherein authentication is confirmed if the security code and the unique serial number on the device-affixed article is the same as an associated security code and serial number recorded in the database.

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