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Security system for validation of credit card transactions

  • US 6,685,087 B2
  • Filed: 01/31/2002
  • Issued: 02/03/2004
  • Est. Priority Date: 01/31/2002
  • Status: Active Grant
First Claim
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1. A method for alerting authorities during transaction card authorization comprising:

  • receiving an authorization request message from a vendor regarding an account of a customer, wherein the authorization request includes a confirmation code of the vendor and wherein the confirmation code entered by the vendor selectively includes either a duress code or a normal code; and

    notifying authorities of a suspected crime in progress if the confirmation code includes the duress code.

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