Patent ID: 6236335
Filing Date: 2001-05-22
Classification: G01S,G06Q,H04L,H04W

Abstract:
A system for locating and tracking a pattern of movement of a wireless device in a transaction establishment comprising:a number of transceivers includinga transmitter which transmits a first signal to the wireless device;a plurality of receivers, each of said receivers including at least one antenna, the plurality of antennae located throughout the transaction establishment;at least one signal strength determining circuit for determining signal strengths of second signals received by the antennae; anda control circuit for controlling transmission of the first signal and reception of the second signals;a storage medium containing locations for each of the antennae; anda computer coupled to the control circuit which instructs the control circuit to transmit the first signal, which determines a location of the wireless device in the transaction establishment from the signal strengths and from the locations of the antennae, and which tracks the location of the wireless device as the wireless device moves through the transaction establishment to determine the pattern of movement.