I agree with you and I don't feel that QR codes are a good fit for things like this (it's just awkward), but just a small nit: Windows Phones actually do suppo

I agree with you and I don't feel that QR codes are a good fit for things like this (it's just awkward), but just a small nit: Windows Phones actually do support QR codes (and other bar codes) out of the box. I'm sure there are others, but that is the only know I know of. :)