關於「Passport number」標籤，搜尋引擎有相關的訊息討論：

Taiwan passport - Wikipediaen.wikipedia.org › wiki › Taiwan_passportApplying for Past Passport Recordswww.boca.gov.tw › ...Chinese passport - Wikipediaen.wikipedia.org › wiki › Chinese_passportNotices for foreign nationals applying for an ID No.www.immigration.gov.tw › ...Taiwa