I was thinking about uses for the Oculus Rift the other day, and Sword Art Online is obviously one of the first things that popped into my head. And then it got me thinking: just how far away is technology from being able to produce something like SAO? Graphics are pretty much solved already. Powerful enough gaming PCs can pump out 4k 60fps graphics now, so basically anything should be possible graphics wise when we've got that much power already. The closest that I know of that is possible to build now would be the Omni treadmill and an Oculus rift with a Kinect and/or maybe an eMotive headset type of thing. I also saw that the University of Washington did an experiment where one person was actually able to move another's arm to play a game halfway across the campus. What do you guys think? Any technological advancements recently that you think could eventually lead to a holodeck at some point if they were integrated correctly?