You can further increase the security of your SSH key by giving it a passphrase. In this case it takes something you have -- the key -- and something you know -- the passphrase -- to gain access to your account. If you feel confident that your key will only be under your control, you can forgo providing a passphrase for your key. This will allow you to log into servers without typing a password at all. Having an SSH key without a passphrase can allow you to automate and schedule tasks that
