Reposting the paper referenced in the G+ thread: https://panopticlick.eff.org/browser-uniqueness.pdf https://panopticlick.eff.org/browser-uniqueness.pdf From

Reposting the paper referenced in the G+ thread: https://panopticlick.eff.org/browser-uniqueness.pdf https://panopticlick.eff.org/browser-uniqueness.pdf From the paper: "By observing returning visitors, we estimate how rapidly browser fingerprints might change over time. In our sample, fingerprints changed quite rapidly, but even a simple heuristic was usually able to guess when a fingerprint was an 'upgraded' version of a previously observed browser's fingerprint, with 99.1% of guesses correct and a false positive rate of only 0.86%"