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A comment on With Google's My Location, Who Needs a GPS?.

Re:With Google's My Location, Who Needs a GPS? by tlrobinson on Wednesday November 28, 2007 @03:00PM (#84390)
When the iPhone came out I had a great idea to actually implement this... unfortunately there were too many road blocks, the main one being that the carriers don't tell you where the cell towers are. http://tlrobinson.net/blog/?p=24

A company called Navizon ( http://www.navizon.com/ ) has such a product, and they rely on users to wardrive for WiFi and cell towers.

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Re:With Google's My Location, Who Needs a GPS? by asmosoinio on Friday November 30, 2007 @03:08AM (#84930)
So it is a database lookup system based on some kind of tower id?

I was just wondering about that. It would really make sense if the GSM/CDMA standards had the tower pass their position to the cellphones, but I guess that was not something the people designing the systems had in mind back in the days.

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