Take a quiz first, Signup after

Hello, It is very important that our website allows a "guest" to take the quiz and register at the end to be able to save/share/receive a badge. As I want to avoid using another plugin for the quiz and we choose your product because of the overall awesomeness. If this isn't possible, I highly recommend you allow this type of action because not everyone will want to sign up for an account to take a quiz. The idea here is to be able to take a quiz like these quiz's on facebook/social networks, IE: What kind of action hero are you? What is your Disney character? If this isn't possible, Could we somehow combine, Register+Signin+Take the quiz all from one click of a button? I know we could handle this with custom php, but I would like to first ask the community and the authors before we start hacking the code.