I cant use fingerprint scanner

[AC Question]

So,i bought this phone(galaxy s5) from second hand and it already had one fingerprint in it and i dont know how to delete it,when i try it says that i need to input password for backup.I dont have it,i cant reset it or anything else.
I am new to this forum thing...

 

[belodion]

Welcome.

Without those details, the phone will remain permanently unusable. Try to get them from whoever put them on it.
The phone certainly ought not to have been sold like that.
https://forums.androidcentral.com/showthread.php?t=409154

 

[colenthri]

Have you tried resetting with recovery mode?