The airport in Detroit, Michigan (USA) used Amigas for the video screens that displayed information above the security check points for many years. I suspected this was the case until I arrived for a flight one day and saw all 4 screens with guru meditation errors on them! This obviously removed all doubt as to the system in use. :-)
I would say that the airport didn't update these systems until sometime around 1999. Now they have nice new screens with better resolution all around the airport, but when I walked past one of them the other day there was a Windows Explorer screen up instead of the arrival/departure information. :lol: