title: How to authentication against Web Api in an angular application without login
body: <p>I have an Angular Application and a Web Api. When any user access to the app, he is route to login page and using the user's credentials I create a token (with JWT), with which the application authenticates to consume the api.
  However, login is not mandatory any more, users can access to home page directly. So now I have a conceptual question ...
  What is the correct way to authenticate against my api for unauthenticated and authenticated users.</p>