But with improved microphones, I imagine you could whisper almost inaudibly. That would probably be even less noisy than a keyboard.

Once inside participants view a random selection of computer-generated objects. These include a telephone, a football and an umbrella.
Do you really need a virtual reality football? Why not use, I dunno, a football? Computers can be useful for this, buy why not have a box of objects, and a computer that does the selection for administrators in both rooms? Double-blind, anyone?

The real question is, can you play Mike Tyson's Punch-Out when you're done?