The Known Traveler Number (KTN) is a unique identifier assigned to individuals approved for trusted traveler programs, such as Global Entry, TSA PreCheck, and NEXUS. This number, typically nine digits long, allows the Transportation Security Administration (TSA) to verify a traveler’s trusted status, expediting the security screening process at airports. It’s crucial for accessing the benefits of these programs when booking flights.
The KTN’s significance lies in its ability to streamline airport security. By associating a passenger with their pre-vetted status, it reduces wait times and often allows access to dedicated security lanes. This results in a more efficient and less stressful travel experience. The implementation of trusted traveler programs and the use of the KTN reflect ongoing efforts to enhance security protocols while simultaneously improving passenger convenience.