| CPC H04W 4/029 (2018.02) | 19 Claims |

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1. A system comprising
a server configured to:
receive a request to locate a user device;
determine one or more prior locations of the user device;
determine a plurality of search devices in proximity to each of the one or more prior locations;
send a request to one or more of the plurality of search devices to locate the user device, including a wireless identifier associated with the user device; and
determine a current location of the user device based on one or more responses from the search devices that indicate the responding search devices detected the wireless identifier.
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