We're at our hostel in Paris, Oops Hostel. Seems very nice, everyone is American. Instantly saw French conmen at the station. They directed English people to a more expensive ticket machine, got them to try and pay by card but the machine seemed to be rigged to reject the card, so the tourists would pay the conmen €62 cash, which presumably they just run off with. We didn't fall for this, but we saw it happen.