A QR code for your retreat schedule.

A printed QR code at the venue hands guests the schedule without anyone typing a link or joining a chat. It is a small thing that works remarkably well — if you get a few small decisions right.

Why it suits a retreat

Guests arrive tired, holding bags, half-listening to a welcome talk. A QR code on the welcome table asks nothing of them: no app to install, no phone number to hand over, no link read aloud letter by letter. They point a camera at it once, and from then on the schedule lives on their own phone.

Point it at something that will not change

This is the one rule that matters more than all the others. A QR code is just a printed URL — it cannot be edited once it is on paper. So it must point at a stable address whose content can change, never at the content itself.

• Do not encode a PDF. The first schedule change strands every poster in the building.
• Do not encode a link you might regenerate — a re-uploaded file, a re-shared document. If the link dies, the poster dies with it.
• Do encode a page that always shows the current plan, so a poster printed on day one is still telling the truth on day five.

Shorter URLs also make physically better codes: fewer characters mean fewer, larger modules, which scan faster from farther away and survive mediocre printing. And a code that shows a readable domain when the phone previews it earns more trust than a string of tracking gibberish.

Where to put it

Several small codes beat one large one. The welcome table first, then the places guests stand with a free moment: by the coffee, inside the room folder, on the back of the bathroom door, at the studio entrance. Add one line of context under the code — "Scan for the live schedule" — so nobody wonders what they are agreeing to.

Printing it so it scans first time

• Size: at least 3–4 cm across for arm's-length scanning; bigger if it hangs on a wall.
• Contrast: dark code on a light background. Skip inverted or heavily stylised codes.
• Paper: matte over glossy — glare is the most common reason a scan fails indoors.
• Test it: scan the actual print, at the actual distance, with both an iPhone and an Android, before you print twenty of them.

One honest caveat about signal

Scanning a code needs one moment of connectivity to load the page. At a remote venue, invite guests to scan during arrival — while they are near the house wifi — and use a schedule page that keeps working offline afterwards. Then the dead spot by the yoga barn no longer matters.