Spelling out a WiFi password to every customer is slow, and long passwords with mixed case and symbols are easy to get wrong. A WiFi QR code solves this: guests point their camera at it and their phone offers to join the network. Nobody has to type anything, and you can keep a long, strong password.
How a WiFi QR code works
A WiFi QR code contains a short piece of text in a format that phone cameras recognise:
- S is the network name (SSID), exactly as it appears in the WiFi list, including capital letters and spaces.
- T is the security type: WPA (which also covers WPA2 and most WPA3 networks), WEP for very old routers, or nopass for open networks.
- P is the password.
The code is read entirely on the guest's phone — it does not contact any website, and nothing is stored online. That also means it is a static QR: if you change the password, you need to print a new code.
Some characters have a special meaning in this format — semicolons, colons, commas, backslashes and double quotes. Good generators escape them automatically (QRBabu does), but if you build the text by hand you must put a backslash before each of them.
Which phones can scan WiFi QR codes?
Almost every smartphone in use today. iPhones running iOS 11 or later read WiFi QR codes from the built-in Camera app. Android phones running Android 10 or later support them from the camera or the WiFi settings screen ("Add network" → QR icon), and many older Android phones can scan them through Google Lens or the manufacturer's camera app. Laptops generally cannot scan QR codes, so keep the password printed in small text below the code as a fallback.
How to make your WiFi QR code
- Find your exact network name. On a phone already connected, open WiFi settings and copy the name character for character.
- Check the security type in your router settings. If it says WPA2-PSK, WPA2/WPA3 or WPA3, choose WPA.
- Open the free generator on the QRBabu homepage, pick the WiFi tab and enter the name, password and security type.
- Download the PNG and test it with both an Android phone and an iPhone before printing.
Use a guest network
Anyone who scans the code can read the password inside it with a QR scanner app, so treat a WiFi QR as public. Most routers sold in India, including those supplied by JioFiber, Airtel Xstream and ACT, let you create a separate guest network. Put the guest network in the QR and keep your billing machines, CCTV and office computers on the main network. Guest networks usually stop visitors from seeing other devices on your network, which is exactly what you want in a café or waiting room.
Where to display it
- Cafés and restaurants: on table tents, menus or the wall near the counter.
- Hotels and homestays: in the room welcome card, next to the TV or on the back of the door.
- Offices and clinics: at reception and in meeting rooms for visitors.
- Homes: on the fridge or inside a cupboard door for guests and family.
Print the code at least 4–5 cm wide, add a short caption such as "Scan to join free WiFi", and keep it away from glare.
Frequently asked questions
Is it safe to put my WiFi password in a QR code?
It is as safe as writing the password on a card. Anyone with the code can read the password, so use a separate guest network for customers and keep your main network private.
Do I need internet to scan a WiFi QR code?
No. The network details are stored inside the code itself and read directly by the phone.
What happens if I change my WiFi password?
The old QR code stops working because it contains the old password. Generate and print a new one.