The first product purchased with a barcode was a 10 pack of Juicy Fruit gum, scanned on June 26, 1974 at Marsh supermarket in Troy, Ohio. The code scanned that day was UPC-A, the same barcode used ...

As BizFluent reports, items so small that they can’t accommodate a lengthy 12-digit barcode use UPC-E barcodes, which consolidate category, manufacturer, and product information into just six ...