More like the clerk asking you to please take your hat and sunglasses off so their CCTV facial recognition system can identify you and keep track of your movements in the store.
Facial Recognition systems are out in the wild, busy profiling [0]
I'm saying if a store used ther CCTV systems to track the behaviour of individual customers, and was building a database of that information, and pestered their customers whose apparel foiled their facial recognition, then that would be pretty much exactly what WP are doing here. What the tools used might have originally been designed for doesn't make any difference IMO.