The list is missing a couple of points, including: "My camera isn't working." "I don't have a QR code scanner app." - And, of course, since we've already shown we're fine with bending the truth a little if it helps our case: "I scanned the QR code. It leads to a porn video. Are you going to argue with me about that over a couple of pixels, or will you be so kind to give me the plain URL?"