title: How to manage state in REST
body: <p>I guess this question will sound familiar, but I am yet another programmer baffled by REST.</p>
  
  <p>I have a traditional web application which goes from StateA to StateB and so on.
  If the user goes to (URL of) StateB, I want to make sure that he has visited StateA before.
  Traditionally, I do this using session state.</p>
  
  <p>Since session state is not allowed in REST, how do I achieve this?</p>