You know what I love about the streets of London? The pavements are so clean. Many is the time I crawl around on my hands and knees - rubbing my trousers into the walkways of my beloved city. Hardly anyone kicks me up the arse, either.
You feel the same way too, don't you?
What? You don't? But... but....
What else could explain the advertising industry's love of putting QR codes as close to the floor as possible?