BenQ demonstrates their smart window concept that allows a transparent pane to turn opaque on passing a current through it. The display room shown here also demonstrates their H.A.D.E.S. system, a network of devices that allows one to control window opacity, ceiling light intensity (lit by LEDs), and a privacy window that blocks light from outside but allows users from inside to see out. Power consumption for the prototype is 10mW/m^2.