The future
Ideally when you check in you should provide your thumbprint as the camera scans your face
When you pass through an airport to the final actual boarding point that thumbprint is your boarding card
No doubt a few terrorists won’t even bother since their ID goes through an international database
It has been known to swap identities in Hong Kong airside , people smuggling wise in the transit area
The boarding pass is in the same name of the guy with the fake passport he was just handed
Meanwhile the facilitator exits immigration on his ID card (or puts on his immigration uniform again)
When people get caught at the destination end the airline gets .... and has to repatriate them to .. an unknown country
So I am very happy if the ISM et al ask not only for my boarding pass, they need to see my passport as well