The ticketing system uses the EZ-Link and NETS FlashPay contactless smart cards based upon the System for e-Payments ( SeP ) system for public transit built on the Singapore Standard for Contactless ePurse Application ( CEPAS ) system . The ticketing system uses the EZ-Link and NETS FlashPay contactless smart cards based upon the Symphony for e-Payment ( SeP ) system for public transit built on the Singapore Standard for Contactless ePurse Application ( CEPAS ) system .