A system for generating information identifying a two-dimensional location
of objects in within a space includes a plurality of wireless modules and
first and second transceiver systems. Each of the plurality of wireless
modules corresponds to one of the objects. The first and second radio
transceiver systems are spaced apart by a predetermined distance and are
disposed proximate the space. The first and second radio transceiver
systems are operable to selectively transmit a signal to select wireless
module, receive a response signal from the select wireless module, and
generate first information based on a detected relationship between the
selective transmission and the receipt of the response signal. The system
further includes a device operable to calculate a two-dimensional
location of the select wireless module based on the first information
generated by the first radio transceiver system and the first information
generated by the second radio transceiver system.