Book excerpt: RFID (radio-frequency identification) is an emerging communication system technology and one of the most rapidly growing segments of todayOCOs automatic identification data collection industry. This cutting-edge resource offers you a solid understanding of the basic technical principles and applications of RFID-enabled sensor systems. The book provides you with a detailed description of RFID and itOCOs operation, along with a fundamental overview of sensors and wireless sensor networks. Moreover, this practical reference gives you step-by-step guidance on how to design RFID-enabled sensors that form a wireless sensor network. You also find detailed coverage of state-of OCothe-art RFID/sensor technology and worldwide applications.