I think if you just say "no ticket transfers," scalping is pretty easy to defeat. 100% mandatory will call, no paper tickets, and they scan the credit card for the sale at the door. Popular solutions for high demand concerts.
That would work, but as I mentioned before there can be a lot of innocent ticket transfers due to people changing plans, etc. These do not result in price increases or artificial supply restrictions. You do not want to actually prevent these (even if they are technically contractually prohibited) because you will piss off a lot of your fans.
Most the time, with bands that have that policy (I am, admittedly talking like club and theater shows, not arena rock shows), advance notice to the ticketing company + a copy of the original purchasers drivers license is considered sufficient.
It's a nice check and balance, and covers the "sell for cost to a friend/acquaintance" route, but is a determent to the professional scalper, since he is required to surrender his identity, essentially, to a 3rd party.
