Pass works as an English and a German word and covers both identity and access. On .org it takes on a civic tone, closer to a library card or a hostel association card, issued by a community to its members. Bitcoin in front tells readers which community issues it. The .org ending is understood internationally and belongs to no single country, which suits a project whose members travel, meet in many cities and expect the same credential to work wherever they go.
In the travel category, the address adds a community edition to the same name held on .ch and .de, and all three can be acquired together. Typical projects include a meetup passport stamped at each local group, an open protocol for event tickets, a non-profit travellers' guide to Bitcoin-accepting places or a volunteer network that hosts travelling Bitcoiners in their cities.