This article describes a software framework for realizing such a distributed tracking environment by discovering independently deployed, possibly heterogeneous trackers and fusing the data from them while roaming over a wide area. In addition to the MAR domain, this kind of a tracking capability would also be useful in other domains such as robotics and location-aware applications. The novelty of this research lies in the amalgamation of the theoretical principles from the domains of AR/VR, data fusion, and the distributed software systems to create a sensor-based, wide-area tracking environment.