What we need is a non-invasive bio-computer interface, either a device that can detect brain signals at the head or the neck as they go out to the body. Ultimately, true VR would require a complete sensory control where our brains are being told what they see, smell, hear, touch, taste, etc. but that level of interaction at this point is only science fiction and would require invasive (surgical) methods to make happen. It will be interesting to see where the inustry goes.