The COM-Meter® is a universal, automatic and optical sensor system for place- and time- based registration of people. Movements, reactions and reception behavior of a single person or a group can be fully registered immediately, using picture-evaluating and statistical methods. The COM-Meter® determines a fully statistical analysis registering the position, speed, spacing, distance, direction and addressing per person as well as the communicative interaction. Measuring people in areas or rooms allow a delivery to other measuring ranges (tracking) or its recognition.