Providing location information on a mobile device includes receiving signals from external devices. Each signal includes information that specifies a geographic location for the external device that has provided the signal. A geographic location for the mobile device is calculated by using the information...http://www.google.fr/patents/US7890123?utm_source=gb-gplus-shareBrevet US7890123 - Personalized location information for mobile devices
Personalized location information for mobile devices
