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Way back when, the point-of-sale (POS) used to look like this – and yes in many places it probably still does – like at the elementary school book fair which is where I snapped this one.  I was not only thrown-back by the calculator-like cash register, but more so by the credit card processing machine..now what was that called? Showing some of my more “seasoned” colleagues, they dotingly referred to it as the “knuckle-buster” – no, not the one you....