As a hiring manager, if I received a resume with little or no info beyond a QR Code on it, that piece of paper would immediately end up in a trash can. This is as bad as jobseekers on Linked-in who ask a recruiter to "look at my profile & tell me if I'm qualified." If the job seeker can't bother to put any effort into their job search, would should the recruiter or hiring manager?

Separately I just received a business card with a QR Code on the back, which I think is a sensible approach. Finally, I think this article would be more useful with some tips on placement of the QR Code, and maybe a link or two to a legitimate QR Code generator. This would help reduce the potential for abuse through redirects, etc.