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JackS Occasional Visitor
Joined: Apr 09, 2004 Posts: 13 Location: Sinking Spring, OH, USA
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Posted: Thu Oct 20, 2005 1:43 am Post subject: Cell Phone Tracking |
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Suppose person A knew person B's cell phone number. Could A track B without B's knowledge? |
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lbendlin Pocket GPS Staff
Joined: 02/11/2002 22:41:59 Posts: 11878 Location: Massachusetts, USA
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Posted: Thu Oct 20, 2005 2:34 am Post subject: |
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Person A would need to work at a Cellphone provider and have network access to the base station(s) that person B is booked in to.
Even then "tracking" is not exactly accurate, cells have a diameter of 500 meters to 12 kilometers (on average). You could improve that slightly with triangulation ( if person B is booked in to multiple cells or switching cells) but it's not good enough to be called tracking.
European police use this technology a lot to follow the approximate path of "surveyable" subjects. _________________ Lutz
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JackS Occasional Visitor
Joined: Apr 09, 2004 Posts: 13 Location: Sinking Spring, OH, USA
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lbendlin Pocket GPS Staff
Joined: 02/11/2002 22:41:59 Posts: 11878 Location: Massachusetts, USA
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Posted: Fri Oct 21, 2005 1:14 am Post subject: |
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That's the theory. In reality only very few handsets have a built in GPS chip, and they predominantly use inferior chipsets. Some of that is alleviated by AGPS, but nevertheless the compliance with the E911 guidelines is rather miserable. Let's talk about this in a year or so. _________________ Lutz
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