How to Send in UPC Labels for a Refund. 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 ...

How to Make Your Own Barcode & Print on Avery Labels. If you sell products to your customers, many of the items probably already have UPC barcodes you scan when ringing up sales. However, you can ...

UPC-A may have been the first commonly used barcode, but it didn’t stand alone for long. Europe modified the spec, adding a digit. The resulting code was called EAN-13.

The barcode you see on most retail products in the U.S. and Canada is known as a UPC-A, for universal product code, and the number comprises 12 digits.

While the world has changed a lot since the mid-1970s, the Universal Product Code (UPC)—what most people think of when they hear the word “barcode”—hasn’t.