The tracking engine is a software module designed for optical motion tracking. With the help of this software and one or multiple camera’s we are able to use live position data of persons moving in space. This data can then be used for a wide variety of applications and as a input for other systems. It gives us the possibility to for example create different visuals depending on where someone is moving through the space. Another possible scenario is to track a performer on stage and thus give him/her the possibility to gain control over several different audiovisual events depending on where he/she is in the space or for example how fast/slow someone is moving.