How can I login new added user ,"Use password-based authentication? " I typed no

F

freeink

I just watched a movie "Legend of 1900",try to add a new user "piano" beside root.
adduser
Username: piano
Full name: piano T.D 1900
Use password-based authentication?[yes] I typed no

How many other authentication methods beside password-based? Smart card ? eToken ? Faceid ? Fingerprint ?
 
Thanks Phishfry
How to login with SSH key authentication? It only can be logged in remotely not locally ?
 
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