Earlier quoted context omitted.
Incognito basically just means "doesn't show up in my history". There are many, many, ways to track users without needing cookies.
> doesn't show up in my history AND drop all cookies from all domains. > There are many, many, ways There probably are. I haven't ever seen it work though. If I get into incognito, my ads show something different my normal profile. In theory, they can track you from your OS/browser combination (and many more variables), but is there a way to test it?
It’s not theoretical; it’s used in practice today.