Your Face = Your Boarding Pass . Thanks to facial recognition, you won’t need to show your ticket or passport at every security gate. Your face will act as your unique identifier, unlocking ...

Whether it’s modern-day and digital or old-school and printed, a boarding pass is your golden ticket to adventure. But if you’re not careful, it could also become a one-way pass to trouble.

But your boarding pass contains a lot more than just your plane seat and gate number. It also includes codes that communicate details about passengers and their itineraries to airport staff.

If you do find this quartet of letters on your boarding pass, allow 15–45 minutes of extra time to get through security at the airport. This story was updated to add a gallery.