Clear contactless card

  • US 7,306,158 B2
  • Filed: 06/30/2003
  • Issued: 12/11/2007
  • Est. Priority Date: 07/10/2001
  • Status: Expired due to Fees
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First Claim
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1. A card, a through portion of which is substantially transmissive to visible light, comprising:

  • a machine recognizable compound containing an infrared blocking material, said machine recognizable compound substantially uniformly covering an outer surface of said portion of said card that is substantially transmissive to visible light; and

    a first transponder associated with said card, said first transponder responsive to a first RF interrogation signal.

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