In depth
Surveys by QR code: how to get more answers
Where to show the code, how many questions to ask and how not to lose answers to access settings.
Where to show the code
| Situation | Where to place it | Call to action |
|---|---|---|
| Conference or lecture | Last slide and a sign at the exit | “Rate this talk in 30 seconds” |
| Café, salon, shop | Receipt, bill, a card at the counter | “How did we do?” |
| School or university | Whiteboard and handouts | “Anonymous survey” |
| Registration | Poster and invitation | “Sign up” |
How to get more answers
- Three to five questions. Every extra question noticeably cuts the number of completed surveys.
- Start with a multiple-choice question, not free text — it is easier to begin.
- Show the code when people have a minute — at the end of a talk, not the start.
- Say how long it takes on the frame: “30 seconds” works better than “Take our survey”.
Before printing, open the form on a phone where you are not signed in to Google or Microsoft. If the form asks people to sign in, check the access settings — otherwise some will leave without answering.
Code size on a slide and a table card
People scan a slide from 3–5 metres away, so the code should take at least a quarter of the screen height. On a table card a 3–4 cm side is enough. Keep the code on screen for at least a minute — people need time to get their phones out.