Not sure if this is Shares fault, but somebody screwed up. I watched a man and a woman both think they had the same seat. Turns out they did they have the same last name, and at some point she was given his boarding pass, which explains why they thought they were sitting in the same seat. My question is how did she, the second one of the two on the plane, get past the gate reader? Isn't there supposed to be technology to catch these things?