Where a Wi-Fi QR code helps
A Wi-Fi QR code saves guests from reading out long passwords and typing them wrongly. It is perfect for cafés and restaurants, holiday rentals and Airbnb listings, offices and meeting rooms, waiting rooms, events, and simply the fridge door at home. People scan it, tap Join, and they are online in a few seconds.
The code follows the standard Wi-Fi QR format (WIFI:T:WPA;S:network;P:password;;) that iPhone and Android cameras understand without any app. Because the details live inside the code, it works offline and never expires.
Tips for a code that always works
- Copy the network name exactly. Names are case-sensitive: "HomeWiFi" and "homewifi" are different networks. Check spaces too.
- Test before printing. Scan the preview with two different phones, ideally one iPhone and one Android.
- Print it big enough. At least 3 cm (about 1.2 inches) wide for a table card, bigger for a wall sign people scan from a distance.
- Use a guest network. If your router supports it, give visitors a separate guest network so they never get access to your own devices.
- Keep the contrast high. A dark code on a white background scans best. Avoid light colours on dark backgrounds.
Common mistakes
- Wrong security type. Choose WPA for WPA2 and WPA3 networks. Choosing WEP or "nopass" for a password-protected network stops phones connecting.
- Forgetting to replace the sign. After you change the password, old printed codes stop working. Make a new one straight away.
- Hidden networks. If your router does not broadcast its name, tick "Hidden network", otherwise some phones will not find it.
- Posting the code online. Anyone who sees a photo of the code can join your network. Keep it inside your premises.
Examples
Holiday rental: print the Wi-Fi card, put it in a frame by the door, and add the same code to your welcome guide PDF.
Café: print small table cards with the guest network code and untick "Show the password" so it cannot be copied from the card.
Office meeting room: add the code to the room sign next to a QR code that links to the booking page.