The Department of Homeland Security says that facial recognition technology will be used on 97% of passengers departing the US by 2023, according to The Verge.
Already deployed in seventeen international airports, including Atlanta, New York City, Boston, San Jose, Chicago, and two airports in Houston, DHS systems will photograph and scan passengers at their departure gate, cross-referencing their face against a library of face images from visa and passport applications, as well as those taken by border agents when foreigners enter the country.
The aim of the system is to offer “Biometric Exit,” which gives authorities as good an idea of who’s leaving the country as who’s entering it, and allows them to identify people who have overstayed their visas. Quartz notes that US authorities have traditionally relied on airline flight manifests to track who’s leaving the country. -The Verge