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Localized detection of mobile devices

  • US 8,521,183 B2
  • Filed: 02/22/2013
  • Issued: 08/27/2013
  • Est. Priority Date: 03/31/2008
  • Status: Active Grant
First Claim
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1. A method comprising:

  • wirelessly broadcasting a plurality of bands of frequencies inside a wireless radio frequency enclosed environment, wherein the broadcast of the plurality of bands of frequencies is confined within the wireless radio frequency enclosed environment;

    selecting a frequency by adjusting a signal strength of the broadcast;

    turning on a mobile device inside the wireless radio frequency enclosed environment via the selected frequency;

    interrogating the mobile device for information comprising at least one of a mobile identifier or a phone number;

    validating the information;

    searching for a frequency other than the selected frequency in a background mode while communicating on the selected frequency andreceiving a signal from the mobile device inside the wireless radio frequency enclosed environment in response to the broadcast of the plurality of bands of frequencies.

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