A QR code that connects to wifi without typing a password
Stick it on the counter or the nightstand. A guest opens the camera, scans, and the phone offers to join the network on its own.
What the phone does on scan
The code stores the network name, the security type and the password in a format phones read natively, written as WIFI:T:WPA;S:network name;P:password;H:false;; Android and the iPhone since iOS 11 pick this up straight from the camera app, no extra download needed, and offer to join the network with one tap.
Three security types cover most setups. WPA and WPA2 handle the vast majority of routers sold in the last decade, so that is the safe default. WEP is older and rarely seen now, though the format still supports it for ageing hardware. An open network with no password uses the value nopass, common for public hotspots with no filtering.
Where this actually gets used
A bed and breakfast sticks it by the bed so guests stop asking at check-in. A café or shop puts it near the till, next to the menu board. A waiting room places it by the coffee machine. An office prints one for a separate guest network, handed to visitors at reception instead of the staff wifi.
What to check before you print
The password sits in plain sight inside the code, readable by anyone who scans it with a reader app. For a company network that matters, this is the wrong use case: set up a dedicated guest network instead, keep it apart from anything sensitive, and only ever print a code for that one.
Change the wifi password and a static code stops working overnight, the sticker needs reprinting. A dynamic code that points to a wifi page avoids that: you update the password shown on the page and the sticker stays put. On paper, keep a white margin around the code, strong contrast and at least 2cm per side for a scan from 20 to 30cm away.
Questions about the free generator
Do I need an app to scan a wifi QR code?
No. The native camera reads it on Android and on iPhone from iOS 11 onward, and offers to join the network straight away.
Is the wifi password visible in the code?
Yes, to anyone who decodes it with a reader app. That is why a sensitive company network deserves a separate guest network rather than direct access.
What happens if I change the wifi password?
A static code goes stale and needs reprinting. A dynamic code avoids that, since the page behind it updates while the printed sticker stays the same.
Switch to a dynamic code to update the password shown without reprinting the sticker, and count the scans. Make it editable