OMNIPRESENT FACIAL RECOGNITION has become a golden goose for law enforcement agencies around the world. In the United States, few are as eager as the Department of Homeland Security. American airports are currently being used as laboratories for a new tool that would automatically scan your face — and confirm your identity with U.S. Customs and Border Protection — as you prepare to board a flight, despite the near-unanimous objections from privacy advocates and civil libertarians, who call such scans invasive and pointless.

According to a new report on the Biometric Entry-Exit Program by DHS itself, we can add another objection: Your flight could be late.

Although the new report, published by Homeland Security’s Office of the Inspector General, is overwhelmingly supportive in its evaluation of airport-based biometric surveillance — the practice of a computer detecting your face and pairing it with everything else in the system — the agency notes some hurdles from a recent test code-named “Sprint 8.” Among them, the report notes with palpable frustration, was that airlines insist on letting their passengers depart on time, rather than subjecting them to a Homeland Security surveillance prototype plagued by technical issues and slowdowns:

Demanding flight departure schedules posed other operational problems that significantly hampered biometric matching of passengers during the pilot in 2017. Typically, when incoming flights arrived behind schedule, the time allotted for boarding departing flights was reduced. In these cases, CBP allowed airlines to bypass biometric processing in order to save time. As such, passengers could proceed with presenting their boarding passes to gate agents without being photographed and biometrically matched by CBP first. We observed this scenario at the Atlanta Hartsfield-Jackson International Airport when an airline suspended the biometric matching process early to avoid a flight delay. This resulted in approximately 120 passengers boarding the flight without biometric confirmation.

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