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CRYPTOGRAPHIC KEY EXCHANGE OVER AN ELECTROSTATIC CHANNEL

  • US 20160014598A1
  • Filed: 07/14/2014
  • Published: 01/14/2016
  • Est. Priority Date: 07/14/2014
  • Status: Active Grant
First Claim
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1. An interactive display device comprising:

  • a touch sensor including an electrode matrix having row electrodes and column electrodes, where the interactive display device is configured to excite one or more electrodes of the electrode matrix to form a capacitive coupling to capacitively send a cryptographic key via an electrostatic channel; and

    a radio transceiver configured to communicate via a radio channel, where the interactive communication device is configured to subsequently exchange encrypted communications over the radio channel, the encrypted communications being encrypted using the cryptographic key.

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