In this episode we will start to build a system that will allow us to have controllers that automatically retain information for the user so that they can navigate away from a Visualforce page. The system we will build will only save a session state record and therefore allows us to build complex pages without fear of not being able to save due to validation rules etc. firing. We can use this in wizards with multiple steps and we will also see how we can build a polling based system to save the state of the page should the user be disconnected.