はてなブックマーク

Chances are you’ve logged into an application (mobile app or web app) by clicking on a ‘Log in with Facebook’ button. If you use Spotify, Rdio, or Pinterest, then you know what I’m talking about. As a user, you likely don’t care about how SSO works. You just want to use an application and can be thankful for a smoother experience and that you have to remember fewer logins and passwords. In order t