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Even without GPS, the cell phone position can often be triangulated by the tower itself. That even has a compelling public safety justification (911 calls) so
by mpyne 13y ago
Even without GPS, the cell phone position can often be triangulated by the tower itself.
That even has a compelling public safety justification (911 calls) so it wouldn't surprise me if phone companies were already doing that as a matter of course.
- lutusp 13y ago> Even without GPS, the cell phone position can often be triangulated by the tower itself. Towers, not tower. With two towers receiving a cell phone's signal, the phone can be located along a line, with three towers, it can be located as a point -- not as accurate as GPS, but reasonably accurate. http://farm4.static.flickr.com/3278/2867853394_7703d6c99f.jpg http://farm4.static.flickr.com/3278/2867853394_7703d6c99f.jp...
- peterwwillis 13y agoOr if you have a van and work with Verizon Wireless, once you know its general location near one tower, you can drive around with a high-powered femtocell, hijack the phone's tower connection and close in on its exact location. If you're a GSM user you don't need to update the phone's PRL list to hijack its tower connection, so you could do something similar yourself with an OpenBTS setup (though without the tower information to correlate, you'd be doing a lot more driving) http://www.wired.com/threatlevel/2013/04/verizon-rigmaiden-aircard/all/ http://www.wired.com/threatlevel/2013/04/verizon-rigmaiden-a...