Brian Retterer wrote a nice tutorial on how to build a Laravel Application with User Authentication using Stormpath.

stormpath user authentication

One of those functionalities is robust authentication and authorization. I think it is safe to say that all great web applications built today need a robust authentication system. That's where Stormpath comes in. You never have to build auth again with Stormpath's Laravel integration, which handles all the authentication needs for you so you can focus on building an amazing web application. Plus, you don't even have to manage user data and security.

First, you will need to have a Stormpath account. It's free.