I used QR odes for the same sort of thing, but Firefox sync has gotten so good at sending tabs to specific devices, including a desktop that might not have a convenient camera, that it's even more convenient.
In the "now that I think about it, it was silly" category, I "copy pasted" a mail using QR Codes from the computer to the phone while in a train. I could send the mail from the phone, but it was more convenient to type it with the computer.
KDE Plasma provides a QR Code for anything not too big you copy-pasted by clicking on an icon. "It should be more convenient than using the computer as a Wi-Fi hotspot for the phone, which is a two clicks operation, right?"
Wrong. It was painful.
We should reuse the idea of Quiet.js, seen today on HN [1], to solve this kind of situation.
Shameless plug: http://zipl.ink is the bookmarklet I use for the exact same purpose which also keeps record of the interesting links I zipped to my phone locally as a nice side effect
