Comment by throwaway2056

It is interesting that the site can fingerprint individual profiles/dir easily:

For example

chromium-browser --user-data-dir=/tmp/profile_A

chromium-browser --user-data-dir=/tmp/profile_A --incognito

chromium-browser --user-data-dir=/tmp/profile_B

chromium-browser --user-data-dir=/tmp/profile_B --incognito

For each command + its incognito it can detect them as separate profiles.

For ultimate privacy one needs to everytime launch browser with a new profile.