How to identify Library barcode
Have the old style card pre-Fall 2012? Click here.
  1. In most cases, the barcode number is your USC ID + 4-digit security code (see example above).
  2. If this does not work, try entering only your 10-digit USC ID number, which appears on the front of the card (circled above)
  3. If the USC Libraries have issued you a card with a barcode label beginning 21275 _ _ _ _ _ _ _ _ _, enter this full 14-digit number.