Leo Varadkar (Dublin West, Fine Gael) | Oireachtas source

To be honest, I have read a bit about that matter but I am not fully across it. Decisions on ticketing are ultimately a matter for the organisations concerned but there should be some provision for cash. One of the issues that came out of the report on the retail banking sector, led by the former Minister for Finance, Deputy Donohoe, was that while we do want to have electronic payments and make them the norm, and they are the norm now, cash is still legal tender and we should make some provision for the use of cash. That said, I do not understand the practicalities of having one turnstile that accepts cash. I just do not know enough about it to make a judgment on it.

See this speech in context