"gyRFID offers a range of Chip cards. Contact IC card and Contactless Card (RFID). Contact IC card chip is visible from outside, contactless card chip is embedded inside of PVC layer, you cannt distinguish it from the appearance. The normally thickness is 0.*4mm. Contact memory card: SLE***2, SLE***8, BL***8, BL***2, AT*4C*1, AT*4C*2, AT*4C*4, etc Application: Hotel lock, vendor system, payment system."