I did some shopping at the mall today. I hadn't been there in quite some time but I was on a mission. I went, specifically, to JC Penney and was surprised to learn that they no longer use cash registers. I was greeted by a woman who appeared to work there who was wearing a sort of fanny pack/shoulder holster thing that carried a small wireless device that resembled a smart phone.
I found some really nice drapes on sale and decided to buy two panels.
The sales associate used her device to scan the bar code on each package and asked me how I would be paying. I handed her my credit card and she swiped the magnetic stripe along the side of the little machine. Then she turned it over to reveal a keypad where I was to enter my PIN number.
At no point during the transaction was I afforded the opportunity to see the mathematics involved.
I always watch the screen at the checkout counter like a detective on a stake out. I may be old-fashioned but I don't always have a lot of confidence that the price I expect to pay will be the same as what I'm actually charged.
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