Zack Whittaker
CBP has been on a years-long effort to roll out facial recognition at U.S. airports, trialing one airport after the other with the help of airlines, in an effort to track passengers as they leave the U.S. Although citizens can opt-out, the biometric scanning is mandatory for all foreign nationals and visitors. CBP is using the system to crack down on those who overstay their visas, but critics say the system violates privacy rights.
