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Compact protocol and solution for substantially offline messaging between portable consumer device and base device

  • US 7,600,670 B2
  • Filed: 10/19/2006
  • Issued: 10/13/2009
  • Est. Priority Date: 09/13/2002
  • Status: Expired due to Fees
First Claim
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1. A method comprising:

  • receiving a message code associated with a reward at a base device, wherein the message code is received from a portable payment device;

    analyzing the message code;

    generating a message using the message code using a dictionary associated with the base device; and

    sending an updated message code from the base device to the portable payment device.

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