Not sure how they do it for Olympics and World Cup, they probably compensate with more gates/scanners than a typical venue.
I am not advocating either way, which is either keep a ticket anonymous, or tie a ticket to an ID.
I guess Ticketmaster would love to tie tickets to ID, so they would know the customers better.
If/when https://nfc-forum.org/news/2024-07-nfc-forum-defines-next-ge... gets implemented by Apple/Google then we could one phone tap, get the ID, the ticket and verify that they match.
But I have no idea when Apple or Google would implement those ?