Bernard Durkan (Kildare North, Fine Gael) | Oireachtas source

I understand that a rapid testing system with rapid results is operating in some countries. By "rapid", I mean results being provided within a few hours. How effective and reliable is this system? Can it be used at airports as we move into the new phase of living with the virus? How effective could a rapid testing system that produces results within one or two hours be if used in those circumstances?