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Security techniques for electronic devices

  • US 7,535,373 B2
  • Filed: 12/06/2005
  • Issued: 05/19/2009
  • Est. Priority Date: 07/15/2005
  • Status: Active Grant
First Claim
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1. A secure electronic system comprising an electronic device, the electronic device comprising electronic circuitry and a thin-film security layer integrated with at least a portion of the electronic circuitry so that physical access of said portion of the electronic circuitry causes an identifiable change in a characteristic of the thin-film security layer, wherein the thin-film security layer comprises a material with an optically responsive characteristic and wherein physical access of said portion of the electronic circuitry causes a change in an optical property of the material with an optically responsive characteristic.

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