What do passport officers see when they scan your passport?
What do passport officers see when they scan your passport? 'So my question is, what information can they see when scanning a passport? ' Presumably both you and your son hold US e-passports which contain a chip. That chip holds biometric information that's printed on the picture page - name, date of birth, sex, nationality, date of issue, passport number, and photograph.
How do customs know who to stop?
In the air passenger environment, air carriers transmit passenger information to CBP through the Advance Passenger Information System (APIS). CBP officers also rely on the Interagency Border Inspection System (IBIS) to determine which individuals to target for secondary examination upon arrival in the United States.