Hard anti-metal dual-frequency RFID tag
RFID (Radio Frequency Identification) is a wireless communication technology that achieves contactless data transmission and information identification through electromagnetic fields or electromagnetic waves. A typical RFID system consists of a tag, a reader, and an antenna.Dual-frequency RFID: Dual-frequency RFID tags support two different frequency bands at the same time, such as ultra-high frequency (UHF) and…