Launched in 2021, the program is currently operational in 15 airports, with specific airline availability varying by location.
To use these faster lanes, travelers must be existing TSA PreCheck members with a valid Known Traveler Number, an active airline profile, and a valid passport.
Concerns regarding privacy and data security have been raised, though the TSA states its databases are encrypted to protect traveler information.
A proposed Senate bill aims to ensure facial scans are opt-in, used solely for identity verification, and immediately deleted post-check, while travelers can currently opt out of the system.