1) Contactless smart card 
The Leap Card is a form of integrated ticketing introduced in Dublin on 12 December 2011. It is a prepaid card which can be used on Dublin Bus, DART, Iarnród Éireann, Swords Express and Luas; minimum top up for the card is currently €5. The Leap Card is the result of many years work by the Railway Procurement Agency to get an integrated ticket...