A practical workflow
Match the moment
Choose a counter, exit or information card where the visit is naturally complete. Avoid interrupting the service itself.
Check the physical setup
Look at glare, shadows, reach and nearby clutter. A code behind glass or at knee height may be technically visible but impractical.
Watch a real attempt
Ask someone to scan from the usual standing or seated position. Improve the placement before changing the review page.
Avoid this mistake
Do not assume that a larger poster fixes a code placed where customers cannot comfortably stop.
What to check
Compare successful scans during observation with the number of people who noticed the invitation.
Test the whole physical journey
Check both the printed code and the page behind it. A successful scan is only the entry point: the customer still needs to recognise the business, describe an experience and understand the Google handoff. Use the final material under ordinary lighting. Keep a copy of the approved artwork so a replacement does not accidentally introduce a different destination.