So that&#x27;s it? I&#x27;ve never seen that before. Everything I saw seemed more complicated from installing various auth addons to multi-file edits and finger-crossing.<p>And I don&#x27;t see how assertions like this can be made: &quot;This will usually be a username of some kind, but it can also be an email address&quot;<p>Except for HN, Twitter &amp; Reddit, are there any services that don&#x27;t use email for login?