Face scans are replacing passports at U.S. airports. Here's who can — and can't — opt out.

"IDs out, please." You've heard it at every U.S. airport after an international flight for as long as you've been flying. Soon, you may not. Get ready to be camera-ready when you get off an international flight.In an interview with the Washington Examiner published this week, Diane Sabatino, CBP's executive assistant commissioner for field operations, described a future of international travel that does not include reaching for a piece of plastic in your pocket. In some cities, she said, it's already here."In a few years … people with Global Entry are going to be walking through at all of our airports, unless a CBP officer wants to speak to that traveler," Sabatino told the Examiner.Facial recognition for arriving international passengers is available at 238 U.S. airports. A faster version