I find it creepy that my “convenience” comes at the cost of being intently surveilled every second that I’m in the store. (Sure, many stores have security cameras, but this is different — they are literally watching and noting my every move.) And the possibility for error seems large. Can the magical software really tell which size underwear pack I just picked up? What if it enters my carrot as a parsnip? The difference might be a few cents — or several dollars! So no, I don’t really trust it.