The best events give guests something to do, not just something to watch. But the classic options — a hired entertainer, a rented photo booth, a printed pub-quiz — are expensive, need staff, and only involve a handful of people at a time. Two software-based activities fix that: a live photo wall and a live quiz. Both run from a QR code, need no app or login, and pull in every guest at once. Here's how to use them.
1. A live photo wall
A live photo wall turns your guests' phones into the event's camera crew. Everyone scans a QR code, snaps photos, and those photos appear instantly on the big screen. There's no queue, no attendant, and no app to download — just scan and share.
It works because it's effortless: guests are already holding their phones, and seeing their own photo hit the projector is a small thrill that keeps them contributing all night. Afterwards you download every photo in one click.
This is exactly what MemWall does. You create an event in about two minutes, put the QR code on a screen or table card, and photos start flowing. Setting one up takes five minutes, and plans start free.
2. A live quiz
A photo wall captures a room; a quiz energizes one. A live quiz puts a question on the big screen, everyone answers from their phone, and a leaderboard updates in real time. It's the fastest way to turn a passive audience into a loud, competitive one — perfect for the lull after dinner, an icebreaker at a conference, or a team-building round at an offsite.
Our sister product, 12quiz, does this with AI-generated questions: type a topic (the couple, your company, the city you're in) and it writes a full quiz in seconds. Same model as MemWall — guests scan a QR code, no app, no login, and it projects on any screen. If you like how MemWall gets everyone off the sidelines, a quiz is the natural companion.
Photo wall vs. live quiz — which when?
| Goal | Reach for… |
|---|---|
| Capture candid moments all event long | Photo wall (MemWall) |
| Break the ice / energize the room | Live quiz (12quiz) |
| A keepsake to download afterward | Photo wall (MemWall) |
| A structured activity with a winner | Live quiz (12quiz) |
| Zero setup, zero staff, no app | Both |
Run both from one QR moment
The two pair naturally. Keep the photo wall live on a screen throughout the event so memories build in the background, then cut to a quiz round when energy dips — after the main course at a wedding, between talks at a conference, or to close out an offsite. Guests are already used to scanning a QR code for the photo wall, so joining the quiz feels like second nature.
Because both are web-based, there's nothing to install and nothing to return. You spend your budget on the event, not on equipment rental.
Getting started
Start with the photo wall — it's the lowest-effort win and runs itself once the QR code is up. Create a free MemWall event, and if you want an activity with a leaderboard too, spin up a quiz at 12quiz.app. Between the two, every guest has something to do — whether they're the type to snap photos or the type to shout out answers.
Frequently Asked Questions
Do guests need to download an app for either one?
No. Both MemWall (photo wall) and 12quiz (live quiz) work by scanning a QR code that opens a web page. No app, no account, no login — on any phone.
Can I run a photo wall and a quiz at the same event?
Yes, and they complement each other well. Keep the photo wall running on a screen throughout, and switch to a quiz round when you want to focus the room's energy. Guests already know how to scan in for both.
Are MemWall and 12quiz made by the same team?
Yes. Both are built by the same team (19 Sites Aps) and share the same scan-a-QR, no-app, project-on-a-screen approach, so if you're comfortable with one you'll be comfortable with the other.