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PORTABLE CONSUMER DEVICE CONFIGURED TO GENERATE DYNAMIC AUTHENTICATION DATA

  • US 20080034221A1
  • Filed: 06/18/2007
  • Published: 02/07/2008
  • Est. Priority Date: 06/19/2006
  • Status: Active Grant
First Claim
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1. A portable consumer device comprising:

  • a memory on which dynamic authentication data is stored;

    a processor configured to update the dynamic authentication data;

    a read-write device configured to read data from the memory and write data onto the memory; and

    an interface for transmitting data from the portable consumer device and receiving power from an external device, wherein each time power is received from the external device the portable consumer device is configured to read the dynamic authentication data from the memory, update the dynamic authentication data, and transmit the updated dynamic authentication data from the portable consumer device, and wherein power for operating the processor and the read-write device is received exclusively from the external device.

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