This is a new kind RFID wearing products. It is designed by ceramic material of central ring and resin material of surface. The pattern and color can be customized. RFID chip is 125Khz rewritable T5577. This ring can be used to copy the access control card of Tk4100, EM4100 and EM4200, which use UID as access verify. Compared other RFID ring in the market, our ring has better sensitivity. It can be read from 360° angle.