The automated or manual system which maintains information on where a hardcopy document/file is at any one time, whether it is with a particular user, on the shelves, or in secondary storage.

In virtual space technology, a tracking system is generally a system capable of rendering virtual space to a human observer while tracking the observer's body coordinates. For instance, in dynamic virtual auditory space simulations, a real-time head tracker provides feedback to the central processor, allowing for selection of appropriate head-related transfer functions at the estimated current position of the observer relative to the environment.