The real use of authentication services will most likely be found in Web shopping; rather than, for example, secured E-mail.

真正的认证服务的使用最有可能出现在Web购物中；而不是出现在像安全电子信件这类应用中。

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For example, the Authentication Processing Filter (which I discuss next) stores user information such as username, password, and E-mail address in the security context.

比如，Authentication Processing Filter(我将稍后进行介绍)将用户信息(如用户名、密码和电子邮件地址)存储在安全上下文中。

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In a case where the openid_url is owned by the internal OpenID provider (for example, 'blueid.bluehost.ibm.com' for IBM internal OpenID authentication), you can refer to just the e-mail address.

如果 openid_url 由内部 OpenID 提供者（例如，供 IBM 内部 OpenID 身份验证使用的 'blueid.bluehost.ibm.com'）拥有，那么可以只使用电子邮件地址。

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Publishers must do their own authentication of users and their own e-commerce outside the Apple interface, to make the program work.

FORBES: Will Apple Force More Publishers to Build Paywalls?

This is essentially an authentication scheme that tries to ensure that e-mail messages come from the place that they say they do.

BBC: NEWS | Technology | Spammers exploit anti-spam trap

Remember, the purpose of the payments query that a merchant initiates when you try to pay for something, whether on-line or in-store, is authentication, i.e.

FORBES: Tokenization And The Collapse Of The Credit Card Payment Model