I found some good resources about JSW (JSON Web Tokens). I am working with Angular 2 rc1 and Laravel 5 and found some good resources:
Do I need the implementation of JSW on clientside (Angular 2) AND serverside (Laravel)? What if someone types the url in the addressbar in the browser...
Angular 2 requests JWT (Json Web Tokens) on login; Laravel generates it and you save it on the client-side (Angular 2) using localStorage. Then on each API call that needs Authentication, you send the JWT and validate it using Laravel (Middlewares are useful). Hope it helps Happy Coding :)