[EastSmith]

Hmm, I just gave it a try with https://fingerprint.com/ and each time I restarted the browser it says it is my first visit. This is really a nice surprise, as fingerprint.com tends to always recognize your previous visits.

Update: "In permanent private browsing mode, cookies and site data will always be cleared when Mullvad Browser is closed." It has this setting ON by default.

[dean2432]

try this one. add a signature and see if it can detect you across sessions.

https://abrahamjuliot.github.io/creepjs/