The tech is currently opt-in, with passengers stepping up to a kiosk, inserting their ID, and having their faces scanned."What we often see with these biometric programs is they are only optional in the introductory phases — and over time we see them becoming standardized and nationalized and eventually compulsory," Albert Fox Cahn, the founder of the Surveillance Technology Oversight Project, or STOP, told The Post.In addition to the TSA, facial recognition technology is currently utilized by other agencies under the Department of Homeland Security, including Immigration and Customs Enforcement, which uses the tech to track migrants.Law enforcement agencies have also adopted the tech, though its use has been heavily criticized due to widespread reports of racial bias."I am worried that the TSA will give a green light to technology that is more likely to falsely accuse Black and Brown and nonbinary travelers and other groups that have historically faced more facial recognition errors," Cahn told The Post, adding that he doesn't "trust the TSA to evaluate the efficacy of its own facial recognition systems.""