The problem with passports

Have you ever seen somebody in the street and thought you know them, until you get closer and realise it's a different person entirely. Matching faces to memories or pictures is easier for some people than it is for others. But what happens if you're job is dependent on being able to tell the difference between a 2D face in a photo and a person standing in front of you? Hannah Tooley spoke to Dr Rob Jenkins from the Department of Psychology at York University. He's been studying passport control officers in Australia to see how good these professionals are at it, and the results might surprise you