
just checking to see:
1. do you know what a QR code is
2. does your phone have a program for it, or did you actively have to download one?
3. do you even care?
As a good example of simple use is, quick linking to web urls without having to type out an actual URL.
Even better, it can be used to link a location to your GPS navigation automatically.
Both situations I want to use it for and would potentially make a user's experience better, provided, when someone sees it, they know what it is.
Would you click on it, if you found it on a map print out or would it just look like rubbish to you?