After landing we went to the train station at the airport, we were unsure of which ticket to buy when a man came to help us. He showed us which ticket we needed and asked if we had a travel payment card, we said no, so he put his card in the machine and produced 2 tickets for us.
I was already suspicious of him and his slight of hand with the tickets was not quick enough. Not sure why but my reaction was to laugh. He calmly walked away no argument.