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Structure and method of making combination proximity/insertion identification cards

  • US 4,855,583 A
  • Filed: 08/17/1987
  • Issued: 08/08/1989
  • Est. Priority Date: 08/17/1987
  • Status: Expired due to Fees
First Claim
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1. An identification card, comprising:

  • electronic circuitry which communicates with a remote sensor by means of electromagnetic signals propagating in space between said sensor and said card; and

    a magnetic data storage medium wherein data is stored on said medium in a matrix format and is sensed by a reader which detects said stored data.

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