Seb7 - 7:55 pm on Oct 8, 2008 (gmt 0)

[news.bbc.co.uk ]

Mozilla, the company behind the Firefox browser, has released technology that helps websites detect the physical location of computers. Users will have control over how much location information they give

It seems the user basically authorises the browser Javascript to have access to your current location.

navigator.geolocation.getCurrentPosition(function(pos) {
alert( pos.latitude + ", " + pos.longitude );
})

[edited by: Seb7 at 8:10 pm (utc) on Oct. 8, 2008]