Do we tie it to your ticketing account? Ok fine, the scalpers just sell whole accounts.
Do we tie it to your phone? If so, scalpers get a really cheap Android to send the e-tix to. That’ll cut out the flippers on the less hot tours, but probably just make Taylor Swiftc resales more expensive. And what about people who get a new phone between ticket purchase time and the show (a lag of often several months).
Also you now just helped the scalpers every time they misfire. No more eating 30% on stubhub and selling below market!
It’s not a bad idea but it’s not as trivial as it sounds.
I personally think a better idea is to just break up live nation. This is a problem that could easily be solved if the venue owner, promoter, and ticket agent aren’t all one company.