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Simplified vehicle bluetooth pairing employing near field communication tags

  • US 8,432,260 B2
  • Filed: 02/26/2010
  • Issued: 04/30/2013
  • Est. Priority Date: 02/26/2010
  • Status: Active Grant
First Claim
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1. A method for establishing secure communications between two wireless electronic devices, said method comprising:

  • providing a first electronic device which uses a protocol for wireless communications with other devices, said first device containing a Near Field Communication reader/writer;

    providing a second electronic device which uses the same protocol for wireless communications as the first device, said second device being embedded in a vehicle electronic system;

    providing a Near Field Communication read-only tag on the interior of the vehicle, said tag containing secret information about the second electronic device;

    providing a software algorithm on the second electronic device, said algorithm operating only when the vehicle is in an ignition-on condition, to detect a signal in a frequency band of the Near Field Communication reader/writer and, upon detection of such a signal, cause the second electronic device to temporarily switch from a non-discoverable mode to a discoverable mode;

    passing the first electronic device near the Near Field Communication read-only tag, such that the first device can read the secret information from the tag;

    triggering the second electronic device to temporarily switch from the non-discoverable mode to the discoverable mode;

    transmitting information from the first device to the second device in order to initiate the establishment of a secure communications; and

    completing the establishment of the communications by exchanging additional data as required by the wireless communications protocol being used including computing and wirelessly transmitting by the first electronic device an authentication certificate which is calculated from the secret information which was read from the Near Field Communication tag.

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