Moritz Stefaner speaking about his work on the Selfiecity.net project (part 2) at the 'Visualized' conference in New York, 6-7 February 2014.
"The AquaTop Display projects an image onto a water-filled bath. Users dip their hands in to control a computer game. Hand movements are detected by a Microsoft Kinect camera. The data collected is then translated into instructions that control the game. The fountains are driven by playing a low sound through waterproofed speakers at the bottom of the bath. Users can interact with the display from above or below the water's surface."
(BBC News, 28 November 2013)
[Researchers at The Koike Laboratory at The University of Electro-Communications in Tokyo have made a bath-water touchscreen that combines Microsoft Kinect camera to sense use interactions. The item was reported Laura-Jane Rich for the BBC2 Click programme.]