Fog Screen
Fog Screen technology. From what I gather it’s an area with fog particles suspended in a special “laminar” airflow which is non-turbulent and fairly uniform, so much so that you can project an image onto it. The image can be translucent or opaque. Imagine the applications! I can see these things popping up in clubs and bars all over town; curtains; opaque, but insubstantial doors! (Thanks Vic)