So, looking at James Cameron's "Avatar", I was thinking - with things like the Oculus Rift and other VR style tech coming out, what would be required to take it a step further, and include full sensual stimulation, ala Avatar? Where you can, literally, plug into a machine and go out and experience the world as though you were there, but without the danger of being there; this could be useful in applications such as deep sea/off planet exploration, scouting hostile territory for military operations, disarming minefields, etc. We would obviously need some way to collect the sensations we, as people, can, well, sense... and then transform that input into an electrical signal to be sent from the machine back to the pilot to be translated into something the nervous system could understand. Is there any kind of technology for this? I know we have been working on things able to interface with the nervous system, but I've fallen a bit behind in these and don't know how, or if, these have advanced at all.