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Methods and devices for monitoring the distance between members of a group

  • US 20050200487A1
  • Filed: 03/04/2005
  • Published: 09/15/2005
  • Est. Priority Date: 03/06/2004
  • Status: Abandoned Application
First Claim
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1. A method for monitoring the distance of between members of a group, the method comprising:

  • providing each of the members with a monitor, the monitor adapted to transmit at least one signal, to receive at least one signal transmitted from at least one other monitor, and to determine a characteristic of the at least one received signal representative of the distance of the monitor from the at least one other monitor within the group;

    transmitting at least one first signal from a first monitor provided to a first member of the group;

    receiving the at least one first signal by a second monitor provided to a second member of the group;

    determining the characteristic of the at least one received first signal representative of the distance between the first monitor and the second monitor;

    comparing the characteristic of the at least one received first signal to a predetermined characteristic; and

    when the determined characteristic deviates from the predetermined characteristic, activating a signal advising at least one member of the deviation.

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