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Build an Event Registration & Live Check-in System with FlowFn

Running an event means two jobs a spreadsheet can't do well: take registrations online, and know — in real time — who's actually walked through the door. FlowFn does both. A registration form fills an attendee list, an emailed QR ticket gets people in, and a live count updates the moment each person scans in, so your team can watch the room fill without counting heads.

FlowFn Team · Product

16 Jul 2026 · 3 min read

This is a recipe — each part is its own FlowFn feature, wired together into a working event system:

Architecture: registration form → attendees sheet → ticket email; a realtime door check-in Stream feeds a live count screen, and a workflow feeds an auto-refreshing analytics board

Piece FlowFn feature
Registration a Form
The attendee list a Data Sheet
Confirmation + ticket an email Platform Tool
Realtime check-in a Stream
The live count a stream-connected screen (a Playground)
The analytics board a Visualizer

Let's build it.


Step 1 — Take registrations

A Form collects the essentials — name, email, ticket type — and every submission lands in the attendees Data Sheet. Publish it on your event subdomain and share the link; no signup wall, no third-party ticketing fee.

The attendees Data Sheet — ticket, name, email, type, status, and check-in time

The status select (Registered / Checked in / No-show) is the field the whole system pivots on, and ticket_type lets you slice the crowd later. Each row is a ticket.

Step 2 — Email the ticket

On submission, a Platform Tool emails a confirmation with a QR code that encodes the ticket ID. That QR is what turns a slow, name-spelling line into a one-second scan at the door.

Step 3 — Check people in, in real time

This is the part that makes an event feel run. A scan at the door publishes to a Stream — FlowFn's realtime layer — which fires a binding that flips the attendee's status to Checked in, and pushes the event to every stream-connected screen at once. A small display bound to that channel shows the running count with no refreshing and no polling: it moves the instant someone arrives.

Step 4 — Watch the room fill

Two views work together. The live count — 143 of 210 in the room — is that stream-connected screen from Step 3, to the second. For the analytics — arrivals by hour, checked-in versus registered, the ticket-type mix — add a Visualizer, fed by a workflow that pushes each check-in into it:

The Loop Conf check-in board — registered vs checked-in, arrivals by hour, and by ticket type

Arrivals by hour let you staff the door for the rush, and the ticket-type mix shows who's actually turning up. A Visualizer auto-refreshes on a timer (every few minutes), so it's the shape-of-the-morning board next to the by-the-second counter — not the live count itself.


Why this beats an events SaaS

  • You own the attendee list. It's a Data Sheet you can export, email, or feed into next year's invite — not data locked in a ticketing platform.
  • Check-in is genuinely live. The Stream pushes each scan to every screen instantly, which is exactly what the front desk needs on a busy morning.
  • It flexes to your event. Add a waitlist, a badge-printing step, or session-level check-ins — each is one more form, sheet, or workflow.

Wrap-up

An event system is a registration Form → an attendees Data Sheet → a QR ticket email → a realtime check-in Stream → a live count + an auto-refreshing board. The form fills the list, the QR gets people in fast, and the Stream keeps the count honest to the second — no ticketing SaaS taking a cut of every seat.

Start with the form and the attendee list; even just "register online and email a ticket" replaces a spreadsheet and a reply-all thread. Then wire the door scan to a Stream and put the board on a screen. Watch your room fill in real time.

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