Internet probe can track you down to within 690 metres

Online adverts could soon start stalking you. A new way of working out where you are by looking at your internet connection could pin down your current location to within a few hundred metres. Similar techniques are already in use, but they are much less accurate. Every computer connected to the web has an internet protocol (IP) address, but there is no simple way to map this to a physical location. The current best system can be out by as much as 35 kilometres…

More (New Scientist)

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