Measuring distance

  • US 5,959,568 A
  • Filed: 06/26/1996
  • Issued: 09/28/1999
  • Est. Priority Date: 06/26/1996
  • Status: Expired due to Term
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First Claim
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1. A system for monitoring and affecting actions on behalf of a group of objects, comprising:

  • a first electronic tag attached to an object in the group, comprising;

    circuitry for communicating with a second tag, the circuitry communicating at least information pertaining to an object in the group, anda memory connected to the circuitry and capable of storing the information, anda second electronic tag attached to an object in the group, comprisingcircuitry for communicating the information with the first tag,a memory connected to the circuitry in the second tag and capable of storing the information,wherein the information comprises a distance between the first tag and the second tag.

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