I know who you are
You didn't log in, accept cookies or allow anything. But the moment this page opened, your browser told it all of this.
How sites use this
- A small script reads dozens of details like these. Each one alone is shared by millions of people.
- Put together, the combination is rare enough to pick your browser out of a huge crowd, like a fingerprint.
- Ad networks and trackers save that code. When you visit another site with the same tracker, they know it's you again, even after you clear cookies.
How to give away less
You can't hide everything, but you can make your browser look like a lot of other browsers.
Safari and Firefox (set Tracking Protection to "Strict") hide or fake many of these details. Brave randomises them, and Tor Browser makes everyone look the same.
A content blocker stops many fingerprinting scripts from loading in the first place. On iPhone, turn on "Hide IP address" and "Advanced Tracking Protection" in Safari settings.
Keep your browser updated and avoid unusual extensions or extra fonts. The more unusual your setup, the easier it is to spot.
A private window deletes your history and cookies afterwards, but it doesn't change your fingerprint, as the code above shows.
Everything on this page is read and shown on your own device. Nothing is sent or saved. The "one in…" figure is a rough estimate based on public research (EFF Panopticlick, AmIUnique). Real numbers vary a lot, and phones of the same model look more alike than laptops.