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System and method for tracking people

  • US 8,519,845 B2
  • Filed: 06/06/2011
  • Issued: 08/27/2013
  • Est. Priority Date: 12/16/2010
  • Status: Expired due to Fees
First Claim
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1. A method of tracking people, comprising the steps of:

  • transmitting a polling request to a mobile device associated with a particular person of interest;

    in response to the polling request, transmitting a location signal including positional data and time data representative of the location of the mobile device at the time of reception of the polling request;

    determining if the location signal transmitted by the mobile device is being received and if communication is interrupted, then storing the positional data and the time data in on-board memory until communication is re-established and at that time, re-transmitting the location signal and clearing the stored positional data and the time data from the on-board memory, wherein the stored positional data and time data is stored for a pre-set time threshold after which subsequent positional data and time data overwrites the original stored positional data and time data;

    receiving a supplemental location signal from a fixed sensor, the supplemental signal including supplemental positional data and supplemental time data representative of the location of the mobile device when the mobile device is detected within proximity of a fixed sensor;

    recording the positional and time data and the supplemental positional and supplemental time data in a database as a set of geographic positions and corresponding times associated with a path of the person of interest;

    generating a visual display image of the path of the person of interest overlaid on a geographic map; and

    transmitting the positional and time data and the supplemental positional and supplemental time data to a single guide of a group of people, the group of people including the person of interest.

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