it isn't the false-positives you'd be worried about, but the false-false-positives. IE, George and Bill are twins. George has booked a flight but the face scan says it's Bill trying to get on the plane.
That's not how those systems work. They just try to see if the face on the camera matches the one associated with the ticket, same as what airline employees do. It is "match" or "no match". The system doesn't know nor care who Bill is.
