The RFID Yarn® developed by Taiwan Textile Research Institute is thin, soft, easy to hide, and can be woven into textiles, and has passed 5 major durability tests (anti-laundry, anti-acid, anti-alkali, anti-high temperature, and anti-roller pressure) in the textile field to broaden as many application possibilities as possible. RFID changed from the existing label style to the yarn mode, which can be hidden in consumer clothing. When the clothing is discarded, the clothing can be easily tracked, identified, and classified.