Apple's new passport-based Digital ID is rolling out on iPhone and Apple Watch — giving travelers a new way to clear TSA security lines with just their device. Why it matters: It's the biggest step yet in the tech giant's push to make the Apple Wallet app a digital replacement for everything in your pocket — from credit cards to car keys to IDs.

Users with a US passport can add their information to Apple Wallet by clicking on the Add button at the top of the screen. This is where they’ll be asked to select a driver’s license or ID card. Once they select Digital ID, they’ll be shown further instructions on how to complete the setup of their Digital ID.

An Apple ID serves as the cornerstone of your interaction with Apple’s ecosystem, providing access to services like iCloud, the App Store, Apple Music, and more. Whether you’re setting up your first account or transitioning to a new one, understanding ...