Scan if you can: an American pizzeria held a funny promotion

A pizzeria in Atlanta came up with an unusual way of promoting. She held an unusual promotion, according to which anyone could get a free pizza. All you had to do was scan the QR code. However, there was one caveat.

The coveted QR code was on the head of the promoter and he constantly ran away. Catch the man and scan the code was not so easy.