The TSA’s biometric screening initiative, which began in 2019, has seen substantial growth, with its PreCheck program now counting over 11 million enrolled members. Major airlines have embraced similar technologies, with Delta Air Lines implementing its Digital ID system at six major hubs, including Salt Lake City International Airport, where passengers can move through check-in, security, and boarding using only facial recognition. United Airlines has also deployed biometric verification systems for TSA PreCheck members following successful pilot programs. A significant regulatory change takes effect on May 7, 2025, requiring U.S. domestic air travelers to present Real ID-compliant identification. The requirement stems from the REAL ID Act of 2005, implemented in response to the September 11 terrorist attacks. The deadline has been extended multiple times since the Act’s passage, with the upcoming 2025 date marking the final implementation phase.