Evercookie - virtually irrevocable persistent cookies. Samy's home page || follow my twitter || email me || samy kamkar October 11, 2010: Reported on the front page of the New York Times Find the latest details, code, and implementations on github @
New Cookie Technologies: Harder to See and Remove, Widely Used to Track You. This is part 1 of a three-part series on user tracking on the web today.
You can read Part 2 here. Cookies are still a privacy problem for web users, many years after privacy advocates first raised concerns about their use to track web browsing. Panopticlick.