CAREN Lab, a hidden gem of embodied play in the city! Too bad this panorama projection + motion tracking + interactive hydraulic floor installation is only used for physical rehab. Through an unexpected connection, I was invited to visit the hidden CAREN Lab in mid-town. This medical grade arcade center is packed with technologies. SMALLab and CAREN Lab use the same marker-based motion tracking system but CAREN Lab has better cameras. A researcher there pointed out that a marker based tracking system is necessary to the installation because marker-less sensors such as KINECT can’t provide accurate information on patient’s joints. CAREN Lab has its own custom game editor and the interface works like one in MAX/MSP.