[Q] samsung galaxy s5 locked topic

hi everyone

after kopel of times fault fingerscan is my phoon galaxy s5 locked i must put alternate password but i fogot it.
my phoon is not connected with internet and wifi olso off.
i can log in my gmail account but i need internet connection.
hard reset is my last optin i know how.
is a is dear an author option?????without lost data???????

Thnx