I first encountered this pattern in a rare wearable device, over a decade ago. I bought it from someone and had to contact them to deregister the device. The f

I first encountered this pattern in a rare wearable device, over a decade ago. I bought it from someone and had to contact them to deregister the device. The foot in the door was theft prevention. Crime rates in the targeted regions of those devices was the original motivation and the enabler. From Chesterton's Fence principle, that has to be solved before the zero consumer ownership problem can be solved.