That's the same thing unless you have some kind of double authentication to prove the person who bought the ticket is the same one using it at the show. Like, say, matching it to an outside-authenticating number, like SSN or driver's license number.
Otherwise a scalper can just use "employees" to purchase a few tickets (the limit) at each venue, and resell them.
Let's also have some backscatter imagers to make sure nobody brings weapons into the venue. Emulating the airlines is a business model guaranteed to succeed!
Otherwise a scalper can just use "employees" to purchase a few tickets (the limit) at each venue, and resell them.