What is biometric authentication on Delta app?
What is biometric authentication on Delta app? Biometric Identification Store your participation preference, TSA PreCheck® KTN and Passport Number in the airlines mobile app. By opting in, your identity can be verified without presenting a physical ID at bag drop, the security checkpoint, and at the boarding gate. Delta Air Lines' TSA PreCheck® lobby and bag drop.
Is it mandatory to carry hard copy of boarding pass?
Depending on the requirements of airport authorities, you will need to present a mobile boarding pass, a paper boarding pass printed out by you or a paper boarding pass picked up from the check-in desk.