In this paper literature study and consults of experts have been combined to answer the following research question: “Could a biometric passenger process at Schiphol Airport smoothen the passenger-flow without compromising the safety of air transport?” The research indicates that the use of biometrics in the passenger process could significantly smoothen the passenger-flow at Schiphol Airport, by strongly reducing the waiting lines. Safety won't be compromised but improved by the introduction of biometrics in the passenger process, since the automatical biometrical readings are much more accurate than readings done by security personnel. Furthermore, recent developments have made it possible to use biometrics on large scale without privacy issues, namely by storing biometric-identifiers instead of the actual biometric.