Google Wallet allows users to store their US passports digitally, providing several convenience benefits for domestic travel. This feature is currently only accepted at select airports for travel within the United States.
By storing your passport in Google Wallet, you can avoid searching for it, making it easier to verify your identity when needed. It’s also a safety net in case of emergencies, such as forgetting your physical passport while packing. Additionally, having a digital copy of your ID can expedite security checks at airports and make the travel process smoother.
As digital identification becomes more widely accepted, adding your passport to Google Wallet is essential for future-proofing and preparing for wider adoption. Currently, this feature is only available in select states where it has been enabled.
Source: https://www.androidpolice.com/reasons-add-passport-google-wallet