VideoWindow can be a clear window one minute and a display the next

VideoWindow really lives up to its name – one minute it’s a window and the next minute it can be displaying information before it returns to its original transparent state as a window.
Tech Guide looked at VideoWindow during the Consumer Electronics Show in Las Vegas.The adjustable monochrome liquid crystal display modules of the display use the sun as a backlight to transform the window into an ultra-efficient transparent screen
According to the creators of VideoWindow – a Dut