Dual-frequency RFID tags operate on two different ranges of frequency bands. They are also known as multi-frequency RFID tags. Dual-frequency RFID tags combine the benefits of two different frequency ranges. For example, a single tag can use HF (high-frequency, 13.56MHz) for access control purposes and UHF (Ultra-high frequency, 860-960MHz) for inventory management operations. These dual-frequency tags are read from a greater distance, which makes them ideal for applications where long-range scanning is required. Overall, dual-frequency RFID tags are single solutions for various applications, including more efficient and accurate tracking and management.