San Francisco (CNN Business) UPDATE: US Customs and Border Protection, which is overseen by the Department of Homeland Security, said Thursday that it is no longer seeking a regulation change that would have enabled it to use facial-recognition technology to identify all people entering and leaving the United States, including US citizens. The change follows CBP consultation with Congress and privacy experts.

The Department of Homeland Security wants to be able to use facial-recognition technology to identify all people entering and leaving the United States — including US citizens.

In a recent filing , the DHS proposed changing existing regulations "to provide that all travelers, including US citizens, may be required to be photographed upon entry and/or departure" from the United States, such as at airports.

Michael Hardin, director of exit/entry policy and planning at the DHS, told CNN Business that the rule is in the "final stages of clearance." But because it hasn't yet been published it won't go into effect until after a period of public comment, he said.

Facial recognition technology, which typically matches an image of a person from a photo or video with a still image of them in a database, is becoming increasingly common in airports throughout the world as governments and airlines use it for security and check-in purposes.

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