ICT MxR lab responded to Google’s April Fools joke by implementing their gesture interface in about one hour. To accomplish that, they used a toolkit called FAAST (Flexible Action and Articulated Skeleton Toolkit) and implemented the program SLOOW (Software Library Optimizing Obligatory Waving). It uses the XBox Kinect system to capture the human motions. See for yourself what a simple prank can lead to:

MxR lab FAAST and SLOOW