Did something similar for my roommates recently. We have no printer in our flat, so I grabbed a piece of graph paper, redrew the QR code and taped it onto the fridge. Now our guests can simply scan the picture instead of strenuously rewriting the complicated password.

What's the problem with using a long but humanly readable password, like several concatenated words? It's not like you are trying to protect against large scale attacks.

Scanning it is easier than typing it into your phone.

Pics or it didn't happen.

I mean, it's not that hard to believe...

I think it is a joke-attempt at getting him to reveal his wifi password :)

I have hereby been whooshed, though in my defense I have a guest-only, throttled and isolated wifi network so the potential for misuse didn't occur to me.

I have exactly the same. I don't want the entire world to use it though, as it still uses my broadband connection, which contains my external IPv4 address. I guess I should tunnel it over a VPN instead.

Pretty sure only people who know where you live can use your wifi network, and only then when they are in range - not the entire world.

Network name is: WOOSH!!!

If you change the password, will you repaint the picture?

It's just a guest network...

Who cares if my neighbors or people walking by can use it?

That depends on your legal jurisdiction and its ideas about liability.

There are public places where you can get internet for free..

An it's not like I'm publicly advertising :)

Pretty sure you're somewhat responsible for your IP

So that it is visible from the street...

No, but how well do you really need to secure your guest network?

If people want anonymous WiFi for nefarious purposes they can go to a cafe.