As an airline traveler, I want the ability to consolidate and save all travel-related documentation so that I do not have to dig out my cards from the fireproof safe.
Some examples of information to be stored could be known traveler number (KTN), redress number, DHS "Trusted Traveler" cards (Global Entry®, NEXUS, SENTRI, FAST), ClearMe, and international driver licenses.
This blog from another company discusses more examples of travel documentation. https://www.roamright.com/travel-insurance-blog/travel-documents-checklist/
US Border Patrol info: