MIFARE 4K (S70) is the contactless IC card which is made under NXP MF1 IC S70. Usually it is called MIFARE 4K or S70 according to ISO14443A. The UID has four or seven bytes. The storage capacity is 4K. The date can be protected by electronic key. We can offer PVC blank card, printing card, paper-sticker tag, Key chain, TOKEN and thin & thick cards of various specifications. The applications contain Door-control system, Checking-in system, Identification system, Physical distribution system, Automation system and various member-cards such as: meal-selling, subway, public transportation, club and so on. And also it contains electronic consumption, electronic ticket, animal identification, target tracking, laundry management and various payment systems.