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Negotiable document having enhanced security for deterring fraud by use of a thermochromatic fingerprint image

  • US 6,030,000 A
  • Filed: 10/24/1997
  • Issued: 02/29/2000
  • Est. Priority Date: 09/12/1997
  • Status: Expired due to Term
First Claim
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1. A negotiable document having enhanced security for deterring fraud, including:

  • at least one thermochromatic image printed with thermochromatic ink, wherein said thermochromatic image will fade when heat is transferred to the image from a live human hand.

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