The language used here ('obsolete') strongly hints at making this the primary case, with any secondary option deemed inferior. It wouldn't surprise me if using

The language used here ('obsolete') strongly hints at making this the primary case, with any secondary option deemed inferior. It wouldn't surprise me if using a paper boarding pass will just flag you in the system for extra checks. > Could your doppelganger cause confusion with the check-in system? That's the scary one.