Wow... you are taking lucid dreaming seriously.
I've been wondering about the possibility of direct video input/output via the pineal gland. Currently video screen technology has reached the limits of the human eye. The use of the pineal gland could also allow for video input letting the user record their dreams and/or visions in HD as well as basic mouse & keyboard functions.
Current attempts at extracting video from the brain focus on analysing the electrical activity in the area of the brain that's currently processing images.
I think ECG technology and the other brain wave reading things are going to be wear that comes from. They just have to figure out binural beats for light and stuff.
The pineal glands electromagnetic properties make it ideal almost as if it was engineered for interfacing directly with a computer system. Why not make use of it as mother nature intended leaving your primary visual field clear?
I thought you were talking about that happening, and I was just saying which technology was closest. I was not suggesting it. I would be fine with just Virtual Reality, and maybe some electrodes that stimulate the brain.