How do websites know it's me when Site Data shows no cookies for them?

If, without logging out, I close a tab that I was using for, e.g., Twitter and later return to Twitter, it clearly recognizes me because it doesn’t go through the steps required with a ‘new login’.

But I see no cookies for Twitter in my Site Data.

How then does Twitter know that a full login check isn’t required and abbreviates the steps to get back up and running?

(This will always be in a Private or Private TOR tab.)

This topic was automatically closed 30 days after the last reply. New replies are no longer allowed.