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System and method for establishing and monitoring the relative location of group members

  • US 7,181,228 B2
  • Filed: 03/23/2004
  • Issued: 02/20/2007
  • Est. Priority Date: 12/31/2003
  • Status: Active Grant
First Claim
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1. A system for locating a member of a group, wherein each member of the group comprises a portable wireless monitored device equipped with location means, the system comprising:

  • at least first portable wireless monitored device and a second portable wireless monitored device each equipped with location means, wherein the first and second portable wireless monitored devices are accessible via a wireless network; and

    a server accessible via the wireless network, the sever adapted to;

    receive location data from the first portable wireless monitored device and the second portable wireless monitored device;

    establish a location rule for the first portable wireless monitored device,wherein the location rule comprises a proximity threshold relative to the second portable wireless monitored device and wherein the proximity threshold relative to the second portable wireless monitored device comprises a maximum allowable separation threshold;

    determine whether the first portable wireless monitored device is in violation of the location rule established for the first portable wireless monitored device; and

    in the event the first portable wireless monitored device in violation of the location rule established for the first portable wireless monitored device, report the location data of the first portable wireless monitored device directly to the first portable wireless monitored device.

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