First in the physical security aspect the smart IC card can be protected by the key and the key can be stored in the machine of key manager.
首先在物理安全方面，选择安全的IC卡介质，通过设置洗卡密钥确保IC卡安全；
PIN is a key element for systematic control in electron IC commerce. Its technical aspect, as well as legal aspect, shall be emphasized equally.
私人密码在电子商务中是一个关键性的系统控制要素，其技术性和法律性应当受到同等的重视。
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