Residents of certain U.S. states can add their driver's license or state ID to the Wallet app on their iPhone and Apple Watch.
This feature provides a convenient and contactless way to display proof of identity or age at select airports and businesses, and in select apps.
To add a driver's license to the Wallet app, you need an iPhone 8 or later running iOS 16.5 or later, or an Apple Watch Series 4 or later running watchOS 9.5 or later.
To set up the feature, open the Wallet app, tap on the plus sign in the top-right corner, select Driver's License and ID Cards, and follow the steps.
Author's summary: Add your driver's license to iPhone in 11 US states.