The paper proposes a new OTP authentication scheme based on 2-d bar code and ADAPTS it into M-commerce environment.

本文在现有身份认证技术的基础上，结合二维条码和一次性口令认证技术，提出了移动商务环境下的一种身份认证方案。

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The fourth chapter gives the security model in the network exam system, designs and implements the core algorithm of OTP, soft token and OTP authentication server.

第四章给出了网络考试系统安全模型，设计并实现了OTP核心算法、软令牌以及OTP认证服务器。

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The most obvious one to adopt appears to be the user authentication and OTP (one-time-password) that has been in existence for some time and has seen a fair degree of success in preventing fraud.

FORBES: How much should you trust your mobile phone?