I first saw ETAG method on evercookie project. HTML5 Canvas is also a funny/smart technique that I saw there. https://github.com/samyk/evercookie https://githu

I first saw ETAG method on evercookie project. HTML5 Canvas is also a funny/smart technique that I saw there. https://github.com/samyk/evercookie https://github.com/samyk/evercookie One of the purposes of the evercookie project was to have a collection of tracking methods that browser vendors can test against their implementation.