If could contribute an idea, I wonder if one can make the camera watch your surroundings but with people recognizer that would notify you if someone is approaching with the intent to interact with you, and maybe show a notification or an approaching avatar. It would be neat in an office scenario. The next step would be a screen in the real world telling your visitor whether you're busy or interruptible, and a button the visitor can push to "knock on your door".

So that's the future, maybe: cubicle dwellers get their own VR offices...