A known traveler number (noun) is a unique identifier assigned to frequent travelers by the Transportation Security Administration (TSA) to expedite the airport security screening process. For instance, if you’re a frequent flyer who often travels for business or pleasure, you may want to consider applying for a known traveler number.
Known traveler numbers are significant because they allow pre-approved travelers to bypass long security lines and enjoy dedicated screening lanes. This can save travelers considerable time and hassle, especially during peak travel periods. The TSA introduced known traveler numbers in 2002 as part of an initiative to enhance security and streamline the screening process.