The ClothTag is a RFID tagging system for your clothing life. It uses RFID technique to identify each tag. In the memory of RFID tag, ClothTag holds each cloth’s information. This information cooperates with each device and help user. General laundry treatment, color, size, material, color codes are major information ClothTag holds. Smart mirror in the shop, washing machine, steam iron, closet ad cloth hanger can cooperate with ClothTag as shown in scenario. Not only these devices, ClothTag has unlimited possibilities in application.