How to Read Numbers on UPC Barcodes. Barcode technology makes real-time data collection possible. Despite the multitude of barcodes in existence today, universal product codes remain among the ...

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 ...

While the barcode didn’t herald the end times, as conspiracy theorists once fretted, it did usher in a new age in global commerce.

See UPC code example above right. That means a bottler would have to shut down the bottling line, and insert a new label, just for New York.