If you combine this with many other types of sensor data you can get a pretty high dimensional array of stuff that can pretty easily form person-unique clusters

If you combine this with many other types of sensor data you can get a pretty high dimensional array of stuff that can pretty easily form person-unique clusters. Like combining screen res, Touch Support, User agent, Time Zone, Hash of canvas fingerprint, etc [0] gets you to a pretty unique signature even though any single bit of info is essentially worthless to this end. [0] https://panopticlick.eff.org/ https://panopticlick.eff.org/