In September 2008, SANDAG introduced a new contactless "Compass Card", made possible by Cubic Transportation Systems, Inc. The "Compass Card" allows passengers from MTS and NCTD to store regional transit passes and cash value on a rewritable RFID card. Customers can purchase passes and add cash value on the Internet or at any ticket vending machine. Prior to boarding a train, customers tap their Compass Cards on the ticket validator located on the train platform. The LED display on the validator then lights up with lights resembling that of a stoplight, and the LCD display shows text regarding the passenger's fare account.