Why doesn't my Samsung Galaxy S5 fingerprint sensor work?

[AC Question]

samsung galaxy s5 fingerprint sensor doesn't work, and I have no alternate password.

I cannot use the samsung galaxy s5, because I dont have the alternate password for the fingerprint sensor that suddenly stoped working.

 

[B. Diddy]

Re: samsung galaxy s5 fingerprint sensor doesn't work, and I have no alternate password.

Welcome to Android Central! I believe that the S5 requires you to select an alternate password when you select the fingerprint sensor as your screen unlock method. Are you sure you never set one?