Just like augmented reality - why not link face recognition software with airport cameras and connect to the internet. Then as people walk by the security lines it recognized your face and pulls all your information from the internet next to your face. Something like the terminator.

For example John Smith walks by security and the camera recognizes him and adds all the known information about him from security files and the internet infomation i.e history school teacher at Dodd Junior high, received a ticket for speeding in 1998. Is married and has 2 kids.