For example, you could check to see if a user ID has been set in a session variable (showing that the user has actually logged in).

例如，可以检查一个会话变量中是否设置了一个用户ID(表明该用户已经登录)。

youdao

"I've begged and begged them to help me look for my husband," Li Zhenhua said, showing her husbands id card to a crowd of onlookers.

“我已经一再乞求他们帮我寻找我的丈夫。”李珍华说，并拿着她丈夫的身份证给旁观的群众看。

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A Copy of the most recent Utility Bill showing an address that matches either the government ID or the passport.

你最近的帐单复本，上面要包括你的住址，必须与你身份证明上的地址一致。

youdao

So, in terms of what it is that you need to prepare and bring with you for the exam, you need to bring your MIT ID, especially if you haven't been showing up regularly to your recitations and you aren't 100% sure if your TA knows exactly who you are, you need to make sure you have your MIT ID with you.

那么，关于你需要做哪些准备,考试可以带哪些东西，你需要带着你的学生证，尤其是如果你没有经常地参加,习题课,你不能百分之百保证,你的助教确实认识你，那么你更得确保自己到时带着学生证。

麻省理工公开课 - 化学原理课程节选

So convinced were the organisers of Mobile World Congress that they encouraged visitors to get an NFC pass for speedier entry to an event where security involves showing photo ID.

BBC: NFC - not for consumers?