NFC Cracking - NUS Matriculation Cards

NFC technology is now quite ubiquitous in our modern world. It is now known that the encryption of a certain NFC tag, the MIFARE Classic can now be broken in about 200 seconds on a laptop. Unfortunately for NUS, our matriculation cards are MIFARE Classic cards. This allows us to clone these cards easily and potentially abuse them to allow multiple non-NUS students to gain entry into the NUS libraries. In addition, we have figured out a way to forge NUS cards to impersonate any undergraduate or staff member. This presents a serious challenge to NUS to continue using the same technology whilst still ensuring that the security of card accessed doors is not compromised.