On the most popular web sites, anyone Posting comments must register with their national identity number.

在很多流行的网站上，任何发表评论的人都必须用他本人的身份证注册。

youdao

In the next four years, it plans to provide all its citizens with a national identity number.

VOA: standard.2009.09.24

But after weeks of controversy about flags and national identity, politicians' claims about Catholic unionism, and a census showing a growing number identifying themselves as Northern Irish, what lies behind that headline figure in the Spotlight opinion poll is particularly revealing.

BBC: Opinion poll indicates NI voters would reject Irish unity