The U.S. Department of Homeland Security says Customs and
Border Protection is working toward implementation of biometric exit technology
to cover more than 97% of departing commercial air travelers within the next
The goal is outlined in the department's "Fiscal Year
2018 Entry/Exit Overstay Report."
As of September 2018, 15 U.S. airports were using
facial-recognition technology to confirm travelers as they leave the country.
The photos are matched to existing images from passport
applications, visa applications or interactions with agents at prior border
locations to identify the traveler and enable CBP to determine whether the
traveler has complied with terms of admission or if they have overstayed.
To date, CBP has used the facial-recognition system on more
than 2 million passengers on more than 15,000 flights and has confirmed 7,000
of those travelers have overstayed their visas.
Without the facial-recognition system, this sort of check is
done with biographic manifest data, such as name and passport number.
DHS says the biometric system has a match rate of 98%. As a
result of this success, it says CBP has received "many commitment letters
from airport authorities and/or air carriers supporting biometric exit
CBP is also testing facial-recognition technology to
identify passengers crossing borders in vehicles.