Yes! It is possible to login to a remote SSH server without entering password. We need to use ssh-keygen technology to create public and private keys.
Create ssh-keygen using the command below.
Copy public keys to remote host using the command below.
$ ssh-copy-id -i /home/USER/.ssh/id_rsa.pub REMOTE-SERVER
Note: *Replace USER with user name and REMOTE-SERVER by remote server address.*
The next time we try to login to SSH server, it will allow login without asking password, using the keygen.