The United program requires fingerprints and a background check . More travelers can enroll online years . -- U.S. transportation security officials want to speed more travelers through airport security lines by expanding a voluntary program that requires a background check . TSA , airlines have for years sought to balance security with passenger convenience . Several airlines , including United , Southwest , United , and American participating .
The United program requires fingerprints and a background check . More travelers can enroll online years . TSA , airlines have for years sought to balance security with passenger convenience . Several airlines , including United , Southwest , United , and American participating .