> the EFF isn't storing your fingerprint for later analysis and tracking

Yes they are, quoting that very page:

> Your browser fingerprint appears to be unique among the 312,935 tested in the past 45 days

So clearly they store the information for at least 45 days. This raises the question what they actually mean by unique. If I change my IP and re-test, I get the same

> Your browser fingerprint appears to be unique among the 312,941 tested in the past 45 days

So does that mean that my fingerprint changed, and they can't track me anymore? Or do they mean to tell me that they still track me and I'm still as uniquely identified.

Their methodology and linked articles does not seem to answer this [0] [1]

It's all very complicated, because the fingerprinting needs to be unique enough to identify you while still being "persistent" enough not to identify you as somebody else if you change just one bit of it.

[0] https://www.eff.org/deeplinks/2010/01/primer-information-the...

[1] https://coveryourtracks.eff.org/about