The original barcode Woodland and Silver invented was comprised of a series of concentric circles rather than the black and white vertical lines we are more familiar with today.
In 1974, a Marsh supermarket in Troy, Ohio, scanned a simple black-and-white striped bar code on a pack of Juicy fruit chewing gum.
Today, barcodes are used in more than 25 industries and in a large variety of places.
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