Why an on-screen QR code is the lowest-friction way to pull viewers into a poll, quiz or vote — plus practical tips on size, placement, timing and making it actually scannable.
The gap between a viewer watching and a viewer taking part is usually a few seconds of friction — finding a link, typing a URL, signing up. An on-screen QR code removes almost all of it: point a phone, scan, and you're in the poll or quiz. This guide covers why QR codes work so well for live interaction and how to use them so they actually get scanned. It's part of audience engagement for live streams.
Why QR codes beat "go to this URL"
- No typing. Reading and typing a URL from a screen is error-prone; scanning is instant.
- Phone-native. Modern phone cameras scan QR codes with no app.
- It meets people where they are. They're already holding the phone — the QR turns that into one tap into your poll or quiz.
Lower friction means more participation, and participation is the whole point.
Make it actually scannable
A QR code that's too small, too brief or badly placed won't get scanned. The essentials:
- Big enough. It needs real estate on screen — err larger than you think, especially for viewers on phones or far from a big screen.
- High contrast, quiet zone. Keep clear padding around it and enough contrast against the background; don't lay it over busy footage.
- On screen long enough. People need time to notice it, pick up their phone and scan — several seconds minimum, longer for a quiz people join at the top.
- Steady, not moving. Don't animate or slide a QR you expect people to scan.
- Tell them what it does. A short label — "Scan to vote", "Scan to play" — converts far better than a bare code.
Where to put it
- A corner or lower third during a segment, so it doesn't cover the action.
- Full-ish screen on a holding beat — before a quiz starts or over a break — when getting people in is the moment.
- Within title-safe, in from the edges, so it isn't clipped on some displays.
QR checklist
- Large enough to scan from a phone or across a room
- High contrast with a clear quiet zone; not over busy footage
- On screen for several seconds (longer at a quiz start)
- Static, not animated
- Labelled with the action ("Scan to vote")
- Placed within the title-safe area
How Show Runner handles it
Show Runner builds the QR code into its poll and quiz overlays, so the code that gets your audience in is generated for you and shown on screen with the graphic — with a background you can style to keep it high-contrast and scannable. Drop the overlay into OBS or vMix and the "scan to take part" moment is handled as part of the graphic.
FAQ
Do viewers need an app to scan the QR code?
No. Modern phone cameras read QR codes natively, and the code opens a lightweight web page (the poll or quiz) in the phone browser — no separate scanner app and no account.
How big should an on-screen QR code be, and for how long?
Bigger than feels necessary — viewers may be on a phone or across the room — with a clear quiet zone and good contrast. Leave it up for several seconds so people can notice it, grab their phone and scan; longer when it's the way into a quiz at the top of a round.
Where should I place the QR code?
In a corner or lower third during active segments so it doesn't cover the action, or larger on a holding beat (before a quiz, over a break) when getting people in is the point. Keep it within the title-safe area and steady rather than animated.
Now put it to work: run a live poll or run a live quiz. Or start for free.