Even as a non-80 year old (much closer to the first half than second), I don't understand what has been built or why I would care...

A piece of paper has infinite battery life and perfect UX (ignoring security for a second). I don't have to remember to add it to something and then worry if I added it, or how I can give it someone later...this idea of a pass you build doesn't seem to pass the "does it make sense" test.