How to login with SSH without enter password

How to login with SSH without enter password
[Client]
$ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/Users/XXXX/.ssh/id_rsa):
Enter passphrase (empty for no passphrase):
Enter same passphrase again:

$scp .ssh/id_rsa.pub mylogin@192.168.1.1:.ssh/authorized_keys
Password:

#Testing
$ssh mylogin@192.168.1.1