Where does Android store fingerprint data?

I am looking for the files that correspond to the recorded fingerprints on my Nexus 6P and a way to "reset" the fingerprint system. Something similar to how Android stores lock screen settings (pattern etc.) under /data/system/locksettings.db*, and you can remove the lock screen by deleting these files (if you have root access). The reason I am asking is because after a TWRP restore on a new Nexus 6P, my fingerprint hardware is not working anymore. The error message is **Fingerprint hardware not available**. Also see this question: https://android.stackexchange.com/questions/146010/fingerprint-hardware-not-available-after-twrp-restore All five previously recorded fingerprints show up on the settings UI, but I am not able to delete them by clicking "Delete".