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Wearable device with time-varying magnetic field

  • US 9,092,708 B1
  • Filed: 04/07/2015
  • Issued: 07/28/2015
  • Est. Priority Date: 02/22/2005
  • Status: Active Grant
First Claim
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1. A wearable device comprising:

  • circuitry to produce a time-varying magnetic field that mimics a swipe of a magnetic card;

    a memory to hold transaction data; and

    a processor coupled to the circuitry to cause the circuitry to produce a time-varying magnetic field that represents the transaction data.

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