Take this scenario (and also check out the exclaimer at the bottom!).
All users on the earth type the same paragraph, or perhaps some password (clearly the longer the most distinct fingerprint, but bear with me on this).
Based on this sequence of keypresses, I capture the timestamp that each keypress is activated, and then the duration that each key is held down for.
Based on this information, how would you recommend, or suggest that a person goes about detecting some unique fingerprint from these values.
I was thinking the best way would be to have each keypress some space point and the duration held down a vector. And then if each use is entering the same paragraph, the distance accross all of the vectors could be used to calculate some identifying fingerprint.
Exclaimer: I'm absolutely not interested in the slightest in tracking users. Every weekend I try and research something that interests me. Last weekend was user fingerprinting based on the typing speed and cadence of users.