I avoid the things where at all possible, less for the tech aspect and more for the moral annoyance. Here I am going into your store, tracking down the things I need, carting them all over, and now you can't even hire someone to run a till? The switch some shops have made to have only self chec makes me start to question what purpose the store serves other than to funnel extra money to the corpos holding them. There's no marked reduction of price, someone lost a job (not much of one but it might have been the lifeline they needed), and we're putting up some shiney retail frontend with all the additional environmental and economic costs...

Just skip the show, open a warehouse and give me the keys to a forklift already, at least they're more fun to drive than a shopping cart.