FaceQuencer is a camera-based sequencer and looper. It is written in C++ using OpenFrameworks, and uses Pure Data for sound processing. The tool does face-tracking and gives you visual feedback about the loop being played. When the camera sees a fiducial (the amoeba-like images on your cubes), it identifies it and performs specific actions. The fiducials are part of the reacTIVision project, and are also used on the reacTable.