Short for Radio-Frequency Identification, this is a technology whereby IDs are recognized using RF(Radio Frequency). This technology allows you to store information in an RFID tag composed of an antenna and a chip and identify information by reading it with an RFID reader.
The functionality and performance of RFID vary depending on the frequency. A low-frequency band of 125 kHz and a high-frequency band of 13.56 MHz are commonly used for access control systems.