Why HTML5 can detect exactly the geographic location?

Question

As I know the information about geographic location that a browser has, is from IP. But with an IP, we can only obtain the location like city, country.

I wonder why HTML5 can find my exact street name, like what this page does: http://html5demos.com/geo

possible duplicate of http://stackoverflow.com/questions/2641948/how-html5-geolocation-feature-works — Fabrizio Calderan, Feb 20 '12 at 08:34
The page you linked to doesn't show exact location in every situation - I — MarcinJuraszek, Feb 20 '12 at 08:34
possible duplicate of [About Geolocation in HTML 5](http://stackoverflow.com/questions/2248404/about-geolocation-in-html-5) — jondinham, Feb 20 '12 at 08:35

score 2 · Accepted Answer · answered Feb 20 '12 at 08:37

2

Well, it doesn't. It makes an educated guess. But the page you link is several kilometers off for me. And that's despite the fact that my browser does know my address (Opera has it as part of settings).

answered Feb 20 '12 at 08:37

MSalters

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Why HTML5 can detect exactly the geographic location?

1 Answers1