Is it possible to wipe Samsung S5 finger print scanner data from recovery
The purpose of the lockscreen is to prevent someone from accessing your data, which would be erased by performing a factory reset. A fingerprint scanner is not more secure than a password, it's only more convenient. A few cases where it falls short as a password are:


You leave your fingerprints everywhere
Its easier to obtain your fingerprints by force, than a password
Its harder to change your fingerprints than a password


And Fingerprint lock in Samsung Galaxy 5 easily defeated by whitehat hackers