By CBS3 Staff

PHILADELPHIA (CBS) — Some passengers at the Philadelphia International Airport will see a new security screening starting Tuesday. The airport is testing a new program to scan the faces of passengers leaving the airport on some international flights.

Only a few flights on American Airlines, British Airways, Lufthansa, and Qatar Airways are affected.

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The screening will happen when you present your boarding pass at the gate, not in the main security line.

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Then passengers’ faces will be checked against pictures that Customs and Border Protection already has on file.

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Passengers are allowed to opt out of the screening.