You need to provide a mechanism to support user identification and authentication that allows for the unique identification of users.

需要提供一种机制以支持用户标识和身份验证，允许用户拥有惟一的身份标识。

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The various garbage collection implementations use different strategies for identification and reclamation of unreachable objects, and they interact differently with the user program and scheduler.

不同的垃圾收集实现使用不同的策略来识别和收回不可到达的对象，它们与用户程序和调度器以不同的方式互动。

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Each of these is clicked by the user and has its click-hold time measured to create a user identification signature.

这些部件将被用户逐个单击并且测量单击持续时间以创建用户身份签名。

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However, he did say that the bureau will rely on browser-based encryption and a user identification number found on each of the census short forms to authenticate users.

CNN: Census Bureau will allow millions of citizens to file census forms online

Schindler lifts, in use in hundred of high-rise buildings, use technology such as a personal identification card readers or keypads to understand the exact requirements of a user.

BBC: Speeding up work for people with disabilities

This year both Intel and Microsoft have run into a storm of criticism when it was revealed that their products the chips and software at the heart of most personal computers transmitted unique identification numbers whenever a personal-computer user logged on to the Internet.

ECONOMIST: The surveillance society | The