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System and method for tracking movement of individuals

  • US 6,703,936 B2
  • Filed: 09/28/2001
  • Issued: 03/09/2004
  • Est. Priority Date: 09/28/2001
  • Status: Expired due to Term
First Claim
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1. A device for monitoring movement of an object, comprising:

  • a first module configured to secure to the object by a least a band;

    tamper detection circuitry, mounted at least partially in said first module, capable of detecting at least tampering with said band;

    a second module, capable of mounting to and electrically connecting to said first module, including at least a rechargeable battery and a memory capable of storing a history of movement data; and

    movement detection circuitry providing said movement data;

    a third module, capable of electrically connecting with said second module, including a data modem capable of connecting to a remote station, and a battery charger;

    wherein when said second module is connected to said first module, said memory periodically records available location data representing a position of said device at the time of recording;

    wherein when said second module is removed from the first module and connected to said third module, said memory downloads through said data modem and said battery charger charges said battery; and

    wherein connecting said second module to said third module does not terminate any securing relationship between the first module and the object.

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