A web app that turns a single Zendo Stereo show into a lasting community. People scan a code at the door, land in tonight's room, meet the person beside them, and save each other to their phones on the spot — and you walk away owning the guest list, ready to invite them back.
The whole night as a guest lives it, top row to bottom. Notice how little there is: making a friend and capturing the email are the only real jobs — everything else stays quiet, the way the brand is quiet.
A QR on the wall & on the ticket. No app store, no download.
The one that matters: this row becomes your Mailchimp list, tagged to this event.
The hub. Calendar = .ics file · Tickets = a link out to your Eventbrite.
Works on every iPhone & Android camera. No public directory — private by default.
The heart of it. One scan swaps both vCards — she scans your card, tap to confirm, you're both saved.
The payoff for you: the night becomes a list + a reason to return.
Everything you named has a home. I've marked what's core to the first version, what's later, and what's genuinely optional given your one real goal — friends on the spot.
The whole reason to build this. One scan does it: scan someone's code, tap to confirm, and both phones save each other's card at once. No accounts, no follow-backs.
The two-tap check-in is the guest book. Every entry is a real name + email, tagged to this exact event and date — the community, captured.
Check-ins flow into Mailchimp with the event as a tag. Afterward you send "next show at this venue" to exactly the people who were there.
Not a full calendar app — just one "add the next show" button that drops an .ics file into Apple or Google Calendar. Cheap to build, genuinely useful.
A direct link out to your existing Eventbrite — nothing to rebuild, nothing to embed. A Stripe checkout can replace it later without touching the flow.
No guest ever sees another guest's name or email. The only way to get someone's details is a mutual scan. You (the organizers) hold the full list — nobody else does. No feed, no chat, nothing to moderate.
Nothing exotic. The only step up from your usual static sites is a small database to remember tonight's room.
Same door, same QR, for everyone. Nobody is ever asked "are you new or returning?" — the app recognizes you by this phone first, then by the email you type. Checking in is never blocked by a login; the magic link only appears in one narrow case (screen C).
The rule: never ask someone what the system already knows.
Brand-new email → we ask the name. Checking in quietly remembers this phone, so next time is one tap.
This phone already knows Leo → one tap, no typing. No "returning?" button — it just greets him.
Known email on a new phone → greets & skips the name. Still no login to check in. Magic link only if he opens "My rooms" here.