RFID is a technology that uses radio waves to automatically identify objects. It is useful in warehouse management systems for inventory visibility and accountability. RFID involves electronic product codes, antennas, readers, middleware like Savant and ONS, and physical markup language (PML) to organize information about physical objects. RFID provides advantages for ERP systems like improved inventory accuracy, satisfying trading partner requirements, and increasing inventory turns. Its global use is highest in Western Europe, Asia Pacific, and North America.