Yes, because the library is for NCI students and staff you will need your card. This needs to be swiped at the ground floor entrance gates of the Spencer Dock building to enter the library on the 4th and 5th floors. These gates are monitored by security. Swiping another student's card here is not allowed.
If you have permanently lost your card you must get a new one by contacting Student Services through the Support Hub.
Besides accessing the library, you will also need your student card to take out books or to print so it is important to remember it.