The big downside of this is lack of redundancy. QR codes are incredibly redundant. check out images 6 ("lose an edge") and 10 ("blob of paint") in the page: htt

The big downside of this is lack of redundancy. QR codes are incredibly redundant. check out images 6 ("lose an edge") and 10 ("blob of paint") in the page: http://datagenetics.com/blog/november12013/index.html http://datagenetics.com/blog/november12013/index.html Both of these scan perfectly fine with QR. And in HR, those (and most of other damaged examples) would be unreadable.