To cope with the ever increasing number of passengers moving through airports, border crossing solutions which allow pre-registered travelers to walk through border crossing points are conceivable. For example, using Advanced Passenger Information Systems facial biometrics can be captured “on the go” and compared with pre-positioned templates stored in a pre-registered database. As the airport infrastructure would need to be designed to allow such passengers to move through the “fast-track” lanes swiftly, efficient solutions are required to handle problematic situations such as false non-matches of biometric templates. One possibility is to use mobile devices, such as smartphones equipped with suitable Apps, to conduct a rapid and convenient secondary inspection. This presentation will discuss a use case involving a border guard who uses a smartphone App not only capable of capturing a facial biometric of the traveler and matching this with a template stored on his passport, but also enabled to inspect and/or verify both the electronic data and the physical security features on the document.