They already have Frontgate.
They just need to do an invite only sale where each of us are issued unique passwords via PM or email.
Then we can get into Frontgate with those passwords. Nobody could share their password because it would only be good for one.
I think a measure like this would eliminate the chance for scalpers to cut fans out of the show.
Current Pre-sale format is decent in my book. Only way to take scalpers out of the mix is to require ticket holders to present the actual credit card used for tix purchase during entry to the show. (or photo id )