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Modulation device for a mobile tracking device

  • US 8,367,991 B2
  • Filed: 05/12/2010
  • Issued: 02/05/2013
  • Est. Priority Date: 08/14/2009
  • Status: Active Grant
First Claim
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1. A method of hampering the tracking ability of a mobile tracking device approaching an asset, the method comprising the steps of:

  • generating a plurality of mobile tracking device specific optical codes, each mobile tracking device specific optical code including a series of pulses of optical energy; and

    propagating the plurality of mobile tracking device specific optical codes towards the mobile tracking device, at least two of the plurality of mobile tracking device specific optical codes being propagated in parallel towards the mobile tracking device.

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