Yes, but also no. Of course we can delete passwords here, but we can't delete app's data fingerprint. So the problem is, even if I uninstall an app and delete a

Yes, but also no. Of course we can delete passwords here, but we can't delete app's data fingerprint. So the problem is, even if I uninstall an app and delete app's data, next time when I reinstall it, they can detect the data fingerprint from keychain and match the server side data, so that they can know who I am, even if I use a new IP address or sign up for a new user account. If I don't wanna be detected, or I just wanna be a new user, my only option is to completely reset my device.