Contactless Access Cards

In general terms, Radio Frequency IDentification (RFID) is a means of identifying a person or object using a radio frequency transmissioni
i 125kHz (Low Frequency)
i 13.56MHz (High Frequency)
i 800~900+MHz (Ultra High Frequency)
The technology was invented in 1973 by Charles Walton and has been existing for more than 20 years since world war II, and it has been extensively used in applications such as data collection, access control, ticketing, and assets management. In recent years, the technology has received increased attention due to a confluence of actions including technology advancement, heightened security concerns, supply chain automation, and a continuing emphasis on cost control within industrial systems