ghost.org

tealdeer

Just living

I guess my question should be how they managed to do this without having to create an account and profile users

cookies

If it’s a cookie, the history should not be there if you clear your cookies or open it in a private tab.

The whole chat could be stored “in the browser” but more likely they have it on their server and associate it to you via the cookie. *edit: I guess it is this then according to what afk posted.

If it is not a cookie, there is also your IP and lots of alternative fingerprinting ways of uniquely identifying your browser (see creepjs ). You could use a VPN and disable js in your browser, but that breaks half the internet nowadays.