How to properly reset the fingerprint in the admin profile ?

Mintou

Apps can fingerprint a profile (for example "backgammon masters" game is doing it, you can't get a new account after you reinstall the app, even if you change IP, the app asks for username on first start and automatically creates account based on the profile fingerprint, no way to log out of this account, it will stick to your profile), does the admin profile get a new fingerprint after we reinstall the OS, if not whay is the best way to reset the fingerprint on a given profile ?

User2288

Mintou
missing-root

This is because of ANDROID_ID.
If you reset your phone it will very likely be fixed.

ANDROID_ID persists on the profile for each app with the same signing key.

Next time don't install it on your main profile.

Mintou

Any news ?

soupslurpr

It is probably using Media DRM https://github.com/GrapheneOS/os-issue-tracker/issues/2314

Mintou

soupslurpr
I doubt it used media DRM. The apps successfully works on new profiles and cannot fingerprint user across users. If it was using media DRM it would use it to block it on all users !

soupslurpr

It sucks, but it is planned to restrict access to it :D

missing-root

Regular APP_ID is cleared after reinstall. It has to be something else.

Mintou

User2288
Unfortunately apps can decide to restrict app to owner profile and refuse to work on other profiles other than owner

randomname

there is a whole section in the faq about it..

User2288

Mintou
Really? Wow! Didn't know that.

Do you know how they do this?

Mintou

User2288
Yes they can see whether they are on the main profile or not and this refuse to work on other profiles than main.

Carlos-Anso

Factory reset clears all user data and you start with a new owner user. If it is Android ID they are checking that will be different for the same app in owner user after a factory reset.