While technology in the supermarket industry did not begin with the bar code in 1974, the bar code is surely the foundation on which many of today's retail systems have been built. Thus, the 30th anniversary of the first live bar-code scan, which took place at a Marsh Supermarket in Troy, Ohio, on June 24, 1974, was an occasion to celebrate. Indeed it was. On hand at the Marsh store in Troy were representatives of: Indianapolis-based Marsh; the Uniform Code Council, the organization that ...

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