The conventional personal identification methods, e. g. personal password, identity card, and key, are not satisfied to the need of modern society in security and convenience.
传统的身份认证方法，主要包括个人密码，身份证，钥匙等，其安全性和使用方便性都越来越不能满足现代社会的需要。
Personal identity authentication is a key part in information security architecture and also the premise of the integral information security.
个人身份认证是信息安全体系中一个非常关键的环节。
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