A RFID, smart card, also called a chip card or an IC card, is a plas­tic card with an embed­ded chip that works with access con­trol sys­tem. There are two types of the chip, one is con­tact chip and the oth­er one is con­tact­less chip. Con­tact­less chip include low fre­quen­cy chip, high fre­quen­cy chip and ultra high fre­quen­cy chip. RFID cards are con­ve­nient, reli­able and safe­ty.