For years we've sought the perfect SSO (Single Sign On) solution. Social networks are not exactly the ideal solution for logging in to your office servers, bank account or the county's nuclear defence systems but they're now pretty much the preferred solution for the plethora of mobile apps and web sites we now carry around in our pockets. OAuth provides a way for you to allow your users to log in to your application and identify them from their social media credentials, name, job title for example, you can ask the user's permission to access connections on their social graph or to even post on their behalf. Hook in via Oath and the power of social networks is yours. John will walk through a typical iPhone application with server-based OAuth 2.0 into the social networks.