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Providing location data about a mobile entity

  • US 6,813,499 B2
  • Filed: 03/23/2001
  • Issued: 11/02/2004
  • Est. Priority Date: 03/25/2000
  • Status: Expired due to Term
First Claim
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1. A method of obscuring the location of a mobile entity to a specified accuracy level, wherein available location data having a known accuracy greater than said specified accuracy has its accuracy decreased by combining with the components of the available location data, additional components randomised over a range set by the difference between the known accuracy of the available location data and the specified accuracy level.

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