If you look closely, you can see the seams from the first surface mirrors where they are butted together. This is a very repeatable effect, just need four large first surface mirrors to accomplish it. The camera position appears to be directly behind and square to the subject. You would have to play with the lighting set-up to avoid reflections and flair. My vote is for a live shot, as a novelty photo booth to send personalized post cards home to prove attendance.