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Systems and methods for secure read-only authentication

  • US 10,546,444 B2
  • Filed: 06/21/2018
  • Issued: 01/28/2020
  • Est. Priority Date: 06/21/2018
  • Status: Active Grant
First Claim
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1. A transaction card associated with a financial account and for generating an encrypted value as part of an authentication request, the card comprising:

  • a radio frequency transmitter;

    a clock generator coupled to the radio frequency transmitter, the clock generator being configured to increment a counter value responsive to a wireless read signal received from an external radio frequency reader device; and

    a near field communication tag coupled to the radio frequency transmitter and storing a permanent identifier and the counter value;

    wherein the near field communication tag is configured, in response to the received read signal, to;

    generate an encrypted value based on the permanent identifier and the counter value; and

    provide the encrypted value to the radio frequency transmitter for transmission to the external radio frequency reader device.

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