The universal product code, or UPC, is a bar code that typically has 12 digits and is usually found on the back or bottom of perishable and non-perishable products. To claim a refund for a defective ...

Product bar codes were originally developed to help with inventory tracking and speed up checkout at grocery stores. The relative speed and ease of use of the bar code system, or Universal Product ...

The first modern barcode was scanned 50 years ago this summer—on a 10-pack of chewing gum in a grocery store in Troy, Ohio. Fifty is ancient for most technologies, but barcodes are still going strong.