Method of locating electronic price labels in transaction establishments

摘要

A method of locating an electronic price label in a transaction establishment which relies on known location information from other electronic price labels. The method includes the steps of receiving a message from the electronic price label, determining a first approximate location of the electronic price label from characteristics of the return message, selecting other electronic price labels in proximity with the approximate location, receiving messages from a number of the other electronic price labels whose locations are known, determining which of the number of the other electronic price labels is closest to the electronic price label from characteristics of the messages from the number of the other electronic price labels, and determining a second approximate location of the electronic price label based on the location of the closest electronic price label.