I built https://zebra.page/ during time off from work around the holidays. Stripe came out with payment links a few months later. Not exactly the same thing, but enough to dissuade from spending time marketing it.
This is great, thanks for the writeup! We are actually building something quite similar. We have a rough landing page up at hireross.com. Airbnb folks, I'd love to chat if you're up for it. Just to learn more. email is at the bottom of the landing page.
Tim here, CEO at Ticketleap. We're looking to add 1 person to our engineering team. We're currently building a new product line, for which we have some high aiming goals. If you're in Philly (or looking for a new place to call home), I'd love to grab a few minutes to chat over the phone or a cup of coffee. Apply here and mention HN.
Reporting in the app tells them how many have activated their Selfie Ticket. You can only activate it in the window 24 hours before the event, so it's a pretty good indication they came.