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 ...

The UPC, the most common version of the so-called bar code, wasn't as warmly embraced or as breathtaking as some emerging technologies, but its impact on retailing has been enormous.

Accessing a UPC Database From an iPhone. Universal Product Code apps for the iPhone let shoppers find additional information and perform price comparisons on products while inside a store.

Laurer's barcode wasn't an easy sell at first. Grocery manufacturers had to be convinced to spend the extra money to print the UPC code on their products. What won them over, however, was the ...