Robust Bartender – Touch Magic From Microsoft
Microsoft engineers have been working on an application for their multi-touch Surface tabletop PC that detects the level of drink in your glass and automatically offers you a refill. SurfaceWare use Surface's ability to emit and detect infrared light to gauge the grog remaining in glasses fitted with a special prism. The prism only reflects light when exposed to the air, letting Surface know when you've reached the optimum level to be offered a refill. Check the video too. It’s cool!!!