Why, you are dont have that?

Next thing y'll tell me you oirish dont have digital screens in regular bus stops that show ze bus time estimates
You basically text msg two simple letters (abbriviations for adult or youngster), pay a certain fee, and get instantly get back a receit that you can show the bus driver.
Pretty nifty, because when notice your bus card is empty or dropped it, and dont have cash on you,
you dont have to go out of the bus feeling like a fool anymore (or be late, go all the way back home, look for nearest bank machine etc), but have this very accessible and practical option instead.