I had to anonymize some data while still keeping some details. You could imagine individual trees that needed to be put into groups of similar trees so individual details were lost.
Anyway, these "trees" were effectively user behavior across all our products. I was shocked that simply knowing *when* (to within a second or two) a person did two or more things, you could narrow it down to *one single person* out of hundreds of millions.
Anyway, these "trees" were effectively user behavior across all our products. I was shocked that simply knowing *when* (to within a second or two) a person did two or more things, you could narrow it down to *one single person* out of hundreds of millions.