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User-activated payment card

  • US 8,052,052 B1
  • Filed: 12/04/2008
  • Issued: 11/08/2011
  • Est. Priority Date: 12/04/2008
  • Status: Active Grant
First Claim
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1. A payment card, comprising:

  • a transducer configured to detect a presence or an absence of a gating signal, which is provided by an external source;

    an enable circuit, electrically coupled to the transducer, which is configured to provide an enable signal based on the detected gating signal; and

    a wireless communication circuit, electrically coupled to the enable circuit, configured to provide financial information, which is stored on the payment card, when an external signal is received and when the enable signal is present.

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