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+---
+layout: page
+title: Login/authenticaton
+author: matthew
+---
+
+# Customising login/authentication
+
+<p class="lead">
+  This page describes the different possible forms of logging in.
+</p>
+
+By default, FixMyStreet uses email or password authentication. Confirmation
+emails are sent containing a link, clicking which confirms the account (and
+optionally sets a password for future use).
+
+## Social authentication
+
+If you set up a Facebook or a Twitter App, and provide its configuration
+details in your `general.yml`, then your users will be able to verify
+reports/updates and log in using their social media account. Using this method,
+FixMyStreet will still ask for and confirm an email address (if one is not
+provided by Facebook). The login form on the site automatically adjusts
+to allow people to pick whether to use the social login or the default email
+authentication.
+
+The Facebook App's domain should be set to your site's domain, and under
+advanced settings the OAuth redirect URL should be yourdomain/auth/Facebook.
+
+## Text authentication
+
+If you set up a <a href="https://www.twilio.com/">Twilio</a> account and enter
+the correct parameters in your configuration, you can also activate text
+authentication, whereby instead of a confirmation email being sent, a
+confirmation text is sent to the user's mobile containing a code they enter on
+the site to continue with their report/update/logging in. The user flow
+behaviour is otherwise identical, it is merely using a phone number instead of
+an email for authentication.
+
+On their profile page, users can add email/phone number, and verify ones they
+may have entered previously but not verified.