At its core the protocol revolves around the email address id, instead of creating new user identities.

在协议的核心会解析email地址的ID，而不是创建新的用户身份。

youdao

This opens a window, wherein you need to fill information such as name, address, E-mail ID, and so on.

这将打开一个窗口，您需要在上面填充信息，比如姓名、地址和电子邮件等。

youdao

Enter your name, User ID and your email address.

输入您的名字，用户ID以及您的邮箱地址。

youdao

While the attack was limited to email address and ICC-ID data, we encourage you to be alert to scams that could attempt to use this information to obtain other data or send you unwanted email.

FORBES: AT&T Email: That Huge iPad Security Breach Was Caused By Bad People Called "Hackers"--Not AT&T

When a number generated by the hackers matched an actual ICC-ID, the authentication page log-in screen was returned to the hackers with the email address associated with the ICC-ID already populated on the log-in screen.

FORBES: AT&T Email: That Huge iPad Security Breach Was Caused By Bad People Called "Hackers"--Not AT&T

At both MySpace and Facebook, that web address has included a user ID.

WSJ: MySpace, Apps Leak User Data