Originally Posted by
DaveReidUK
You mean until computer says "no" when the rightful owner of the boarding pass shows up and the !!!!! hits the fan ?
This doesn't happen - or at least it didn't for me a few years ago when the airline screwed up on ticketing and provided me with tickets for transatlantic then onward flight. I had boarded the onward flight using my boarding pass from check in in Europe and was approached by another pax saying 'you are sitting in my seat' whereupon we both showed valid boarding passes for the same seat on the same flight only difference was the name.
I think there is a trusting faith in the airline booking and ticketing systems that may be misplaced.