The implications of uniqueness through multiple seemingly innocuous data points are quite worrisome in a wider context. For example, in the digital sphere, if X

The implications of uniqueness through multiple seemingly innocuous data points are quite worrisome in a wider context. For example, in the digital sphere, if X person has a certain pattern of sites visited, browsing habits and so forth, and then tries to anonymize themselves as person Y for browsing in a way that has no direct connection to any of their regular online accounts, a third party correlating even a small amount of browsing and even vague location data by a bunch of unknown activity profiles could presumably then quickly identify that one of them, Y has a high chance of being X. Or if a bunch of online comment text, buying habits, random basic information or whatever from known person profile X were used to search for similar data points among random people, then correlated together, finding out that Y (who is X but decided to change their physical address, country of residence and so forth for personal reasons) matches very closely with X and is thus very likely to be X seems very easy.