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Systems and methods for passive identification circuitry

  • US 8,820,650 B2
  • Filed: 10/11/2013
  • Issued: 09/02/2014
  • Est. Priority Date: 10/13/2009
  • Status: Active Grant
First Claim
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1. A card reader, comprising:

  • a housing that includes a read head;

    a jack coupled to the housing adapted to be inserted into a microphone input associated with a mobile device, the read head including a slot for swiping of a magnetic stripe of a buyer'"'"'s financial transaction card with the slot in response to a financial transaction between a buyer and seller, the read head reading data on the magnetic stripe and producing a signal indicative of data stored on the magnetic stripe; and

    an electronic system that includes a card reader circuit, a communication subsystem, a control unit, a monitor system to manage card reader behavior between power cycles, a pathway system, and a power subsystem that in operation receives a bias voltage from a mobile device, wherein following the control unit booting up, the communication subsystem checks a status bit in the monitor system, with control unit being notified of the electronic system awakening and forcing a power cycle.

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