[chncdcksn]

A problem I see with this is recognition. A QR code can be printed onto a piece of paper with no further information attached, and even some less-techy people will know what to do with it, because it's clearly a QR code. These drawings are pretty ambiguous, and unless it catches on with the less-techy crowd you'd have to add an attached note "Go download the Meshtag app to read this!", which would probably not happen too often.

They are however, much prettier than regular QR codes. :)