Along with the time development, how does the enterprise make record of “come in and go out” of the staff and the visitor and also the goods and network security, the goods and the information management are highly revolution demand of the enterprise. Since the traditional technology's limit, the conveniences and security already could not satisfy the modernized request. After the appearance of the intelligent lock, we can solve this problem only use one card. Moreover, we can use the card to open the door and also do the attendance checking, parking, property charge and so on. All of this function can only use one card to achieve.