What's the point?
SatelliteCISSP makes a very good point -- basically asking, what's the point of putting a QR code on a piece of paper that you're giving to someone who doesn't know you and that you don't know? Why would they scan it? A QR on back of your card is very different -- you actually handed that to someone who has met you, and may want to know more. It makes sense.
But to rely on a QR code to introduce yourself is about as passive as relying on a resume to introduce yourself. The idea seems good at first glance, but consider the numbers. You're competing with millions of resumes. A QR doesn't improve your odds.
On the other hand, meeting someone and handing them your card -- that changes everything. Then there's a reason to look you up.
