Its like two taps on my phone to scan a QR code where as typing that is probably going to take me 26+ taps.
And I usually prefer to just scan a QR code to get the wifi details. Once again, its far fewer taps.
If you could do something with just two clicks or do something with 26 clicks, which path would you normally take?
You scan and trust random QR codes?
To paraphrase George Bush: Goatse me once, shame on...shame on you. Goatse me — you can't get Goatse'd again