I'm wondering whether besides collecting the typical tracking information (IP + cookies) google has already implemented browser fingerprinting? I read sometime not long ago about it being a hypothetical future method for tracking and identifying google users and would like to know if it's already in use officially?

closed as primarily opinion-based by Adi, NULLZ, Xander, TildalWave, Gilles Oct 11 '13 at 19:30

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As for what Google does officially, it is easily checked: go read Google's privacy policy which is prominently advertised. By definition, it will tell you what information Google "officially" gathers.

The implementation of browser fingerprinting is known and trivial. Most of it is just reading the headers from the HTTP request. Whether Google implemented it or not is irrelevant, since they could implement something to the same effect in a matter of a few days at most. What matters is whether they deployed such a system -- and, "officially", they did not.

  • Your browser fingerprint appears to be unique among the 3,475,427 tested so far. oh dear. – lynks Oct 11 '13 at 13:43
  • Note that this reply is from 2013. Browser fingerprinting is now quite common practice and not so trivial. – beingalex Nov 8 '18 at 8:59

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