If the resulting QR code is too small you can increase it by also passing the -s flag. We’ll use the info above as an example: qrencode -o wifi.png 'WIFI:S:Tux T:WPA P: ' Qrencode allows you to create QR code images with a given text. For this example I’m going to use qrencode but there are others.
OK so now we know the standard but how do we create the QR codes? Well there are plenty of good websites around that will do it for you, but if you’re a little bit weary of putting your WiFi security details into a website you can instead choose to do it offline with a program that does it all on your local machine. So for example if your WiFi name was “Tux” and your password was “” using WPA encryption you would encode: WIFI:S:Tux T:WPA P: Special characters should be escaped using a “\” character.
The QR code standard that mobile devices understand comes in the following format: WIFI:S: Well that’s where a conveniently placed QR code comes in!īy embedding your WiFi details in a QR code using a standard that both Android and iOS can understand you can easily give out your WiFi details to guests when they arrive just by having them scan a code somewhere in your house. Sometimes you just want the security of a long complicated WiFi password without the hassle of having to share it with your guests every time they come over to your house.
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