couponPHP is using Twitter Connect to enable users to sign up using their Twitter account.

• In order to enable Twitter connect you should create a new Twitter app. You can find the Twitter Developer Program’s website here.
• Sign in (using your Twitter credentials) then select “My applications” from the top right dropdown. Finally hit “Create New App”!
• Fill the form! Make sure to add sensible Name and Description for your app because it will be visible for your end users.
• For the callback url add “http://yourdomain.com/ajax/twitter_login.php”.
• Once your app is set up click “Settings” in the top menu.
• Make sure the “Allow this application to be used to Sign in with Twitter” checkbox is checked.
• Go back to the “Details” tab and click the “Manage API keys” link. On this page you will find your API key and Secret
• In your couponPHP admin head to Configuration > Manage Accounts > Twitter.
• Enter your API key and API secret here and save the form
• If you did everything correctly the “Connect with Twitter” button should appear in your front end’s login popup.