has to be ryanair as easyjet don't fly to austria
Anyways - at my airline, they are very thorough on security and boarding cards. I had a lady pax who got all the was past checkin, airport security, the gate, and nearly me on the plane with a mans boarding card!!! The checkin agent made a mistake as the previous pax to check in was called russel ( first name) and she was Russell ( last name). She even had her passport checked at airport security and they never picked it up. She was quite alarmed by this too.