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 rewriteable RFID card. Customers can purchase passes and add cash value on the Internet or at any ticket vending machine. When a customer boards a bus that customer simply taps the Compass Card on the "Validator", usually located near or on the farebox. The LED display then lights resembling those of a stoplight, and the LCD display then shows text regarding the passenger's fare account. When boarding rail vehicles the Validators are located on the platform, and the same process is performed to board the train.