Are your mouse movements being tracked?

Sky Broadband uses JavaScript to track every click and shuffle on its support pages. But they are not the only one. Other ISPs have also admitted recording every wobble of the mouse on their support pages. BT also happily told ISP Review that it does the same thing with a similar product called ClickTale.

What may be tracked is where mice hang out, how far down the page visitors scroll and which bits they spend longest reading.

Think this kind of tracking is limited to web sites? Some shopping centers track visitors (as groups) to establish their browsing habits. Companies such as Path Intelligence track every mobile phone in a shopping center (anonymously, as they have no access to, or – so they say – interest in customers' details) to see how long a window display grabs one's attention or the order in which shops are visited.

The next bit of intrusion will be eye tracking, which is already being produced by Crazy Egg.