What is it about
I'm currently on a task to create a client's fingerprint on a website to recognize if
he's comming back or a first-timer on my page. The whole thing shall be done with clients side Javascript only.
Some people are on this task for some time now:
https://panopticlick.eff.org/
http://www.heise.de/newsticker/meldung/EFF-demonstriert-den-Fingerabdruck-des-Browsers-918262.html (german)
There...