Statistically, what are the chances that they fail open with - someone bought a ticket with someone else’s name - they got through biometric checks where they

Statistically, what are the chances that they fail open with - someone bought a ticket with someone else’s name - they got through biometric checks where they verify your ID and look at a picture to see if it matches - the scanners fail to detect something dangerous - and the person meant to do something wrong? When biometrics fail, they look at your physical ID