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Fingerprint test: can sites recognise you without cookies?
Even without cookies a website can recognise your browser from your screen, graphics card, fonts and the way your machine draws text and sound.
Each detail on its own is harmless. But together they form a pattern that is often rare enough to single you out from millions of others. This is called a browser fingerprint, and ad networks use it to follow you from site to site.
The test runs the same measurements fingerprinting scripts use: canvas, audio, WebGL, fonts, speech voices, keyboard layout and much more. Everything is computed in your browser and shown only to you.
Brave adds random noise to the most used measurements, so the code changes from site to site. Tor Browser makes all users look alike.
What people ask
Does deleting cookies help?
No, not against fingerprinting. It is based on your machine and browser, not on anything stored.
Does a private window help?
Only a little. The private window has the same screen, graphics card and fonts – and sites can even measure that you are using one.