The Winter ’14 release includes OpenID Connect Authentication Providers, allowing your org to be an OpenID Connect Client, and leverage an Authorization Server for user login. Let’s take a look at how this works: If you want to walk through the protocol in detail, there’s an excellent, detailed description on Google’s Developer site. (Source) http://blogs.developerforce.com/developer-relations/2013/09/login-to-your-salesforce-org-with-openid-connect-in-winter-14.html