Last year at just this time the industry marked the 20th anniversary of the first nonexperimental use of in-store scanning.
It was in late June 1974 that the first supermarket scanner went into commercial use. The first scanning store was a Marsh Supermarkets unit in Troy, Ohio. SN offered several news articles about scanning's birthday last year.
But, of course, the history of scanning didn't really start at that time, 21 years ago almost to the day. There is quite an interes