Late last month Google introduced a handy new feature in their Google Maps for Mobile service called “My Location.” My Location allows a user to see their location, or their approximate location using Google’s Maps for Mobile service with the click of the zero key on the mobile device’s keypad. A great feature of this service is that it does not depend on GPS to work. Every time you use your phone it uses a cell tower for reception, and to either place a call or browse the Internet. Every tower has a unique identification and footprint. To find your approximate location the system calculates your position relative to the unique indentifications and footprints of nearby cell towers. While the accuracy of this method may vary from area to area, the service does improve the more it is used. Finally, there is no need to worry about whether or not Google knows where you are. Google’s system uses the same towers for its service that you make use of to place a phone call. The tower receives your phone’s identification, but your personal information is protected.
For more information view the video above, or read more on Google’s official mobile projects blog located here: http://googlemobile.blogspot.com/2007/11/new-magical-blue-circle-on-your-map.html