One solution for that is to use a one-time password (OTP) system.

这种情况的解决方案就是使用一次性密码(otp)系统。

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OTP systems are typically built on a client-server model, where at a given time, for a given user, the same one-time passwords are generated on the client side.

OTP系统通常采用客户机-服务器模型，在给定的时刻对于给定的用户，在客户端生成相同的一次性密码。

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With the ever-increasing use of Kerberos, practitioners might be faced with the need to have Kerberos mechanisms be a part of their two-factor authentication systems using OTP.

随着Kerberos的使用越来越广泛，组织很可能需要在使用OTP的双因素身份验证系统中使用Kerberos机制。

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Following the revelation about "OTP-4, " the ICC dropped the witness from the proceedings, according to the defense.

CNN: STORY HIGHLIGHTS

In a document released Wednesday, Kenyatta's lawyers said a witness identified as "OTP-4" lied about attending a meeting that the candidate was allegedly holding with the Mungiki, an outlawed sect of fighters.

CNN: STORY HIGHLIGHTS

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.

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