The main use of an RFID tag (Radio Frequency Identification) is for automatic identification and tracking of objects. These tags contain electronically stored information that can be read by compatible RFID readers. Commonly used in supply chain management, inventory control, and asset tracking, RFID technology improves efficiency by enabling real-time data capture and minimizing human error. It offers advantages like reduced labor costs and enhanced visibility, allowing organizations to optimize processes and maintain accurate records of items throughout the supply chain.