Patent ID: 9726749
Date: 2017-08-08
CPC Classifications: G01S,H04W

Claim:
1. A system for detecting a user's mobile device in proximity to a location comprising: a central server computer capable of data communication with a plurality of known mobile devices capable of a wireless short range data communication protocol; wherein the central server is configured to receive a unique associated digital identity value from each of said detected known mobile devices; wherein the central server is configured to associate each of said detected known mobile devices with one or more known locations; wherein the detected known mobile devices are capable of being, and may or may not be, located at associated known locations while the system is operating; wherein the central server is configured to receive data from at least one user mobile device capable of a wireless short range data communication protocol; wherein the central server is configured to receive data from said user mobile device capable of detecting said any of said known devices including each device's unique associated digital identity value; said user mobile device capable of long distance wireless data communication; wherein the central server computer hosting a data processing system accepts as input sets of said detected known device identity values from said user mobile device; said central computer hosting a database of values corresponding to selected locations and associated said detected known mobile device identities; said central server computer hosting a data processing program which computes the probability of said user device proximity to said selected location by processing the input sets of detected known mobile device identities by an algorithm which utilizes said database; said central server program capable of notifying selected devices of user device proximity to said location; whereby the detection by said system of sets of one or more detected known mobile devices, whose combined proximity to each other exceeds a threshold value for probability, indicates probable proximity to the desired location.