Hey Product Hunt! 👋 I'm Allan, a guitarist and developer from Brazil. Playing in independent bands, I saw the same problem over and over: small events still sell paper tickets by hand, and there's no easy way to stop copies at the door or to know which band member sold what. Online ticketing platforms don't fit when you're selling tickets at a bar, a school or a church. So I built Ingresso Impresso ("printed ticket" in Portuguese): 🎟️ Numbered tickets with digitally signed QR codes 🖨️ Print at home (A4 with cut marks) or at a print shop (PDF with bleed) 📱 Any phone becomes a scanner, and it works fully offline 🚫 Copies and photos are blocked on the second scan 👥 Assign number ranges to each seller and track who owes what 💬 Send tickets via WhatsApp to buyers who can't pick up the paper Heads up: the app is currently in Brazilian Portuguese only, since it was built for the Brazilian market first. An English version depends on interest, so let me know if you'd use it! I'd love your feedback, especially on the offline check-in. Happy to answer anything about how it works under the hood.

Ingresso Impresso

Copy-proof printed tickets with offline QR check-in

Copy-proof printed tickets with offline QR check-in