Patent ID: 8031120

Claim:
A system for locating and tracking at least one object within an indoor facility, the system comprising: a tag associated with the at least one object; the tag configured to generate a periodic wireless signal comprising at least an identification of the tag; a plurality of network monitors, each of the plurality of network monitors attached to a wall outlet at a known location of the indoor facility, the periodic wireless signal from the tag received at the plurality of network monitors; a plurality of positioning engines, each of the plurality of positioning engines configured to receive a transmissions from the plurality of network monitors, the transmissions comprising information for the periodic wireless signal from the tag comprising identification of the tag and a signal strength of the periodic wireless signal from the tag, each of the plurality of positioning engines configured to produce a location hypothesis for an object based on the transmissions from the plurality of network monitors and a map of physical barriers of the indoor facility; and a master positioning engine for receiving the plurality of location hypotheses from each of the plurality of positioning engines, the master positioning engine configured to evaluate each of the plurality of location hypotheses for the object to determine if a location hypothesis of the plurality of location hypotheses should be included in a location determination for the object, and to generate a location estimate for the object based on the plurality of location hypotheses included in the location determination.