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internet probe can track you within 690 m
From: Jeroen van Aart <jeroen () mompl net>
Date: Mon, 11 Apr 2011 13:10:13 -0700

http://www.newscientist.com/article/dn20336-internet-probe-can-track-you-down-to-within-690-metres.html
"The new method zooms in through three stages to locate a target computer. The first stage measures the time it takes to send a data packet to the target and converts it into a distance – a common geolocation technique that narrows the target's possible location to a radius of around 200 kilometres.
(..)
Finally, they repeat the landmark search at this more fine-grained level: comparing delay times once more, they establish which landmark server is closest to the target. The result can never be entirely accurate, but it's much better than trying to determine a location by converting the initial delay into a distance or the next best IP-based method. On average their method gets to within 690 metres of the target and can be as close as 100 metres – good enough to identify the target computer's location to within a few streets."

It seems to me to be a rather flaky way of finding out your estimated location. But I guess it could be helpful when the objective is just to create some global database of demographics for marketing and privacy invasion purposes, where specifics of an individual's exact location don't really matter.

Besides the latter can always be subpoenaed. ;-)

One more reason to use VPN and other such techniques to hide your location.

Greetings,
Jeroen

--
http://goldmark.org/jeff/stupid-disclaimers/
http://linuxmafia.com/~rick/faq/plural-of-virus.html


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