Bar-code scanning in supermarkets has become such an integral part of the American scene that in 1992, it even had an impact on the presidential election campaign that year. pped at the NCR booth to observe the company's latest scanning systems. As he looked inquisitively at a carton of milk being scanned, the president was overheard saying, "That's amazing." The media immediately jumped on this incident, seeing it as evidence that Bush probably never visited a supermarket in the almost ...

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