I think this is AMAZING! I for one, can't wait to get it when it comes out in stores! I'm thinking of what it would be like with a book like Harry Potter and the Deathly Hallows.... Would you feel the pain from the Battle at Hogwarts? What would happen when Harry nearly dies? I'm curious!
MIT made a Sensory Fiction to stimulate what the characters are doing & feeling, around the time of February 2014, and I believe that they did it in their Media Lab, and they did it because they wanted to see what the characters were feeling, I presume.