The other day, my family received this direct mail newsletter from Liz Krueger, a local New York State Senator.
Good luck trying to scan the QR Code. I tried for some time and wasn't able to, because it's too small and too dense. Either Liz and her marketing/technology team did not do a decent enough job learning about 2D barcode use, or they are just trying to find one other way to tick off constituents. And, besides all of that, I won't even bother mentioning all of the marketing best practices that have been totally ignored.
Way to go Liz!
2D Barcode Litmus Test: FAIL