The 16-digit number found on BuckID cards has been reclassified from S3 to S4 institutional data. This means that it is now considered restricted data and requires stricter safeguards due to its various applications, including functionality as a debit card number, potentially increasing the risk of identity theft and financial loss if compromised.
Note that this change does not apply to the staff or student eight or nine-digit ID number, which is also printed on BuckID cards. This number remains at an S2 classification level.