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Method for monitoring the safety of travelers

  • US 8,471,699 B2
  • Filed: 07/24/2009
  • Issued: 06/25/2013
  • Est. Priority Date: 07/24/2009
  • Status: Active Grant
First Claim
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1. A method comprising:

  • receiving a signal s1 at time t1 from a first telecommunications terminal that is at a first location;

    predicting that the first telecommunications terminal will be at a second location at time t2;

    when the signal s1 is received at time t2 from the second location, predicting that the first telecommunications terminal will be at a third location at time t3; and

    when the signal s1 is not received at time t2 from a second location, verifying a status of a user of the first telecommunications terminal.

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