Comment by Razengan

> Keychain storage doesn’t let FB track you

Are you serious? They literally know my previous accounts even after I DELETE the app, WIPE the iPhone, and login to the same iCloud account on ANOTHER iPhone.

They do this by storing some data. They can store data about anything else. How can be sure if we can't even LOOK at that data?

I only caught this because of the visible symptoms they CHOSE to show us: The list of previous logins.