RFID Master-Slave Reader Architectures for Smart Spaces Applications

Item identification is one of the key enablers of smart space services. This paper introduces a novel read-out method for a master-slave RFID reader architecture, which improves the accuracy of RFID tag detection, localization, and reduces the cost and complexity of the system by using a full wireless technology. The master reader is generally fixed and the slave reader can be fixed or mobile. This architecture also dramatically improves reading distance and operation time of mobile RFID readers in smart spaces. Furthermore, workflows of few smart spaces shopping services are introduced using this architecture.