QR junction stickers for big sites

On a large site — a hospital, a campus, a building with several floors — a visitor can lose track of which photo they are on. A QR junction sticker fixes that: they scan it, and the guide jumps to the photo for that spot.

One sticker, many guides

The sticker does not know where anyone is going. It only names the junction (for example P12). Every guide that passes that junction marks its own photo with the same code, so the same sticker sends a visitor walking to the MRI to one photo, and a visitor walking to Cardiology to another.

Putting a sticker on a photo

Open the guide, then QR stickers on the guide home. For each photo at a junction:

• Scan a sticker — point the camera at a pre-printed sticker (P1, P2, P3 …) and it is assigned to that photo.
• Type the code printed under the sticker, if scanning is awkward.
• New sticker — make a new code of your own (Q1, Q2 …) and print it.

Print stickers opens a sheet of every code in this guide, ready for your printer.

What the visitor sees

While walking a guide that has stickers, a small QR button sits next to the back/next arrows. Tapping it opens a small viewfinder; when it sees a sticker on their route the guide moves to that photo. The camera reads codes on the device and never records or uploads anything.

If the sticker belongs to a different guide — it isn't on their route — the visitor is told so: This code isn't part of your route, with a suggestion to head back. They can go back to the Previous step or Show current step again. The guide never switches them into the other guide, and never guesses a direction it can't know.

Scanning a sticker with the phone's ordinary camera works too: it opens the guide at that photo, or — if several guides pass that junction — asks Where are you heading? with a list of them.

A code belongs to the account that first used it, so nobody else can attach your stickers to their guides.