QiFi is a great online tool that will generate a QR code from your WiFi network name and password. So instead of printing out the name and password—which requires people to manually enter it and is prone to user error—all they need to do is point a QR reader app at the code.
And for you security-minded folks, the site is all local code running, so the WiFi network name and password are never uploaded to the internet. For the truly paranoid, you can load the site, and then go offline to generate the QR code.
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