Patent ID: 8730872

Claim:
A method of alerting a first mobile communication device when a second mobile communication device is in a proximate location to said first mobile communication device, the method comprising: determining, without using a global positioning system (GPS), a first position of said first mobile communication device relative to a first access point; determining a second position of said second mobile communication device relative to said first access point; determining said proximate location of said second mobile communication device relative to said first mobile communication device based on said first and second positions; storing an indication that said first mobile communication device is to receive a signal if said first mobile communication mobile device and said second mobile communication device are in said proximate location to said first access point; comparing access point identification data received by said first mobile communication device in a time period, to access point identification data received by said second mobile communication device in said time period; transmitting from a remote computer to said first mobile communication device, identification information of said second mobile communication device and an indication that said first mobile communication device and said second mobile communication device are in said proximate location to said first access point.