i don't see how a physical passport with a physical stamp is any more meaningful than an offline smartphone with a passport app, either way the receiver needs some connection if they want to do any real verification
So these documents can be checked locally without any form of communications to some central authority (which doesn't exist across national boundaries).
They have visible anti forgery like UV printed symbols and information, underprinted background text and patterns, etc etc.
So they are more "meaningful" than an offline smartphone with a passport app in that they do not require anything other than the officer's ability to see, feel and read the documents.
Even when there's no connection, no electricity, you get some modest layer of security out of "it's hard to manufacture a convincing fake passport if you don't have large-scale resources behind you."
What happens then with app-only passports? Do we close the border crossing entirely until the network is back up? Or do we rely on showing a QR code or NFC handshake that can't be properly verified? I'd think creating a fake passport app that reached those hurdles would probably be easier than getting access to specialized papers and printing technology.
I'm not denying that it's security theater or claiming that it's more meaningful; I'm saying solely that there are physical expectations that are going to be very hard to shake once you go off the beaten path.
https://www.statista.com/statistics/273018/number-of-interne...
I've found that money is more meaningful than anything else to those bored officers. Either they don't actually care that much about your documents, or if they do, they're simply looking for a bribe. At least that's been my experience at out of the way border crossings in southern Africa.
The most ridiculous experience I had was crossing into Zimbabwe with my 11 year old son. The officer wanted to see his birth certificate, which was still in the car that had already been driven across the border. So I had to leave the building, walk across the border, which nobody batted an eye at, get the document, walk back across the border, re-enter the building, and then present the document to the officer who didn't even look at it before letting me proceed to leave the building and walk across the border once again.