It achieves invading customer privacy.

Oh, and selling a lot of their scanner-ball hardware things. Because now anybody who ever buys tickets to any concert or any other live event will now also need to buy one of those little fuckers.

Because you can hand someone else proof of purchase. The only way to truly prevent scalping is by verifying the purchaser's identity, to ensure they cannot transfer it to anyone else. At least not without selling it through the distributor's own channels where they will then collect a fee for the privilege of providing the proprietary platform to facilitate such transactions.

I'll take the scalping, thanks.