Guest WiFi using a QR code
This is super cool and would be awesome for situations where your guests are familiar with QR codes.  But from my experience the process would go something like this:Visitor: What's your wifi password?Me: No password needed! We have a cool QR code you can scan that will auto-join you!Visitor: Oh cool, how do I use a QR code? Do I need an app?Me: Nope, just point your camera at it.Visitor: Like .. .take a picture of it?  And then what, do I...Me: No just point your camera at it.Visitor: Ok let me try it ... oh cool it's prompting me to join your wifi network? what do I do nowMe: Yes Yes, just proceed, that's what it's for.Visitor: That's soo cool, thanks.VsVisitor: What's your wifi password?Me: ShinyTortoise78