1. a system for use in managing activity of interest within an enterprise, comprising a computer configured to (i) receive sensor data that is related to key activity to the enterprise, such sensor data comprising data that is taken in by a sensor at a predetermined location irrespective of object compliance and such key activity comprising an object, and the state of activity for the object with respect to the state of activity for other physically distinct objects in the sensor data, and (ii) process the sensor data to produce output that is related to key activity to the enterprise.