Patent ID: 9549282
Date: 2017-01-17
CPC Classifications: H04L,H04W

Claim:
1. A computer-implemented method comprising: receiving by one or more computing systems a user identifier from a wireless tracking device that reads a user identifier article in proximity to the wireless tracking device; identifying by the one or more computers a geographic location of the wireless tracking device that transmitted the user identifier; performing by the one or more computers a look-up of a client device of the user; identifying by the one or more computers first and second wireless routers that are positioned in the identified geographic location; transmitting, by the one or more computing systems to the first router, a first request message to transmit to the client device of the user; and to the second router, a second request message to transmit to the client device; determining, by the one or more computers whether reply messages transmitted by the client device were received from the first and second routers; determining based on the reply messages a geographic location of the client device; and verifying, based on the geographic location of the client device and the geographic location of the wireless tracking device that the user is in proximity to the client device.