One way to implement authentication/authorization in Angular applications.

Note: Twitter/Facebook/Google auth is enabled by default, but you can easily turn it off by commenting out the passport.use() statements in the server.js file.

• Blogpost: http://www.frederiknakstad.com/authentication-in-single-page-applications-with-angular-js/
• Live version: http://angular-client-side-auth.herokuapp.com/