我想問關於圖書館既[智能身份證]

如果你既欠款欠咗一段時間都未有清還，電腦會自動lock住你張證，一日未清還都唔可以再借書；而如果你想申請用智能身份證借書，其實只係幫你加個功能，但因為登記資料都係同一個人，所以功能可以照加，但未清個欠款就算ID加咗功能都係唔用得架，所以你申請ID加功能既時候，通常職員會提你有欠數，就算你唔清佢都會幫你照做，但要留意唔可以借書，直至清繳所有欠數為止

I think you don't need to pay for it! Of crourse, it's better for you to ask the librarian.

I hope I can help you!