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Magnetic stripe authentication and verification system

  • US 6,899,269 B1
  • Filed: 06/03/1999
  • Issued: 05/31/2005
  • Est. Priority Date: 07/22/1998
  • Status: Expired due to Term
First Claim
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1. An identification system for identifying authentic documents bearing a magnetic stripe recorded with digital data and having a repeatable magnetic characteristic, comprising:

  • a magnetic stripe sensor configured to sense the magnetic stripe to provide an analog signal representative of the recorded digital data and the repeatable magnetic characteristic;

    a digitizer configured to sample a portion of the analog signal to provide digitized samples indicative of the repeatable magnetic characteristic;

    a waveform circuit configured to provide range data characteristics of at least the sampled portion of the analog signal;

    a storage configured to store representations of the digitized samples and the range data as identification data to identify the document; and

    a processor configured to determine whether the digital data recorded on the magnetic stripe has been copied from the authentic document using the digitized samples of the repeatable magnetic characteristic; and

    wherein the processor is also configured to determine whether the repeatable magnetic characteristic has been copied from the authentic document using the range data.

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