That just reminded me... This actually happened to me. I scanned my boarding pass to enter security at Heathrow and it didn't work. I had to a special desk and

That just reminded me... This actually happened to me. I scanned my boarding pass to enter security at Heathrow and it didn't work. I had to a special desk and they had a picture of someone who had apparently already gone through security using my pass. I didn't recognise the face at all. I completely forgot about it until this moment. I guess I was allowed through after showing ID etc. At the time I probably thought it was a "glitch" but maybe someone photographed my pass? I'm always quite careful with stuff like that, though, so not sure.