So, for example, you can assign the task of authenticating users to an Authentication Security Service that all applications have access to and interact with.

例如，可以将用户身份验证的任务分配给 Authentication Security Service（所有应用程序都能够访问此服务并与之进行交互）。

youdao

Authentication methods seek to guarantee the identities of system users.

认证方法试图保证系统用户的身份。

youdao

Authentication is probably a good idea for a blog server that supports multiple users.

对于支持多个用户的博客服务器来说，进行身份验证是个好主意。

youdao

Luckily, users with the new two-factor authentication feature enabled would seem to be immune to the attack.

FORBES: Enable Two-Factor Authentication On Your Apple Account To Avoid A New Password-Resetting Attack

On Facebook, for example, two-factor authentication is triggered when users try to log in in an unexpected way, such as from a computer in a different country.

BBC: Technology

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?