So, for example, everyone pays $0.01 on their credit card, or does a holding charge on their credit card, or registers their identity. All in a 5 minute (or 1 day!) window. And then after the window, tickets are randomly distributed amongst every card which so registered.
You could check multiple things - phone and card and Government ID if necessary (lowering the privacy).
This also feels fairer and less stressful - instead of a lottery based on your internet access, or ability to run lots of browsers at once.
This feels harder for scalpers to do to me, as they need more fake identities, but I'd be curious about the actual ratios when trying it. What goes wrong?
Another one I predict is that you can't buy digitally. For examples, the Lewes fireworks display you have to buy tickets in person in a bookshop in Lewes. Doesn't help if you make a digital ticketing system though!