Most QR codes are tied to advertisement. I assume most students ignore them so they will probably not bother with all the energy required to read a code.
Engagement will probably be higher for more valuable information.
Making these useful is what will help adoption. Right now, they're only being used for marketing purposes. I really like coffee, but I'm not so passionate about it that I will take out my phone, perform seven taps, and watch a bad marketing video about it.
One can imagine useful scenarios though. A microwave which scans the QR and sets the desired cooking time. A little magnet on your fridge which, when you hold up a product to it (empty milk carton) adds that product to the shopping list on your smartphone. Things like this could be useful to the end-user and to marketers.
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[ 4.4 ms ] story [ 20.4 ms ] threadSee code, decide to look at it, fire up app on phone, take picture, wait, oh a boring website link guess I won't use this again in the future.
For things like the Korean subway shopping experiment (http://www.youtube.com/watch?v=nJVoYsBym88) it works because you can shape people's interaction much better.
One can imagine useful scenarios though. A microwave which scans the QR and sets the desired cooking time. A little magnet on your fridge which, when you hold up a product to it (empty milk carton) adds that product to the shopping list on your smartphone. Things like this could be useful to the end-user and to marketers.