How will it work?

Delta says customers enter their passport information during online check-in. Or, at the airport, customers can scan their passport to check in. Next, passengers can click "look" as they check in at one of Delta's automated kiosks. Travelers' face scans will be matched to passport or visa photos on file with U.S. Customs and Border Protection. Delta says customers have the same option as they "approach the camera at the counter in the lobby, the TSA checkpoint or when boarding at the gate."