In 2026, a physical boarding pass printout is rarely a "requirement," but it is still highly recommended as a fail-safe backup. Most major global airports and airlines have fully transitioned to digital boarding passes stored in Apple Wallet, Google Pay, or airline-specific apps. These QR codes are scanned at security, lounge entries, and boarding gates. However, there are three specific scenarios where a printout is vital: 1) If your phone battery dies or the app glitches in an area with poor Wi-Fi; 2) Certain international destinations (like parts of Morocco, India, or Vietnam) where local authorities or secondary security checkpoints still require a stamped paper document; and 3) If you have a "SSSS" designation on your ticket, which often requires a manual check and a paper slip. While you can usually print one for free at an airport kiosk, having one tucked in your passport cover provides peace of mind and prevents the stress of a "tech failure" at the most inconvenient moment of your journey.