Your Student ID card is very important and should be carried with you at all times.  The card has a number of uses, it is your:

• library card,
• security card to gain entry to various University buildings,
• proof of identity.

If your card is lost or stolen you will need to visit the Security Centre on Park Place to get a replacement, for which there is a small fee.

https://intranet.cardiff.ac.uk/students/campus-life/id-cards