Stockly loves IDs
At Stockly, we are building the first mutualized inventory network. In other words, we connect retailers with a global inventory so that they are never out-of-stock. But connecting retailers and sending them stocks we can provide means two things:
- Stockly understands each client-retailer’s representation of stocks
- Stockly can match stocks coming from other partner-retailers to fill the out-of-stocks of our clients
One system to rule them all
The first ID system used in retail was introduced in 1973 in USA & Canada. It was called UPC – Universal Product Code and its aim was to make it easy to identify product features (brand, size, color..) when an item is scanned. This system also allowed brands to reach new opportunities by understanding customer habits and needs.

First UPC bar code scan occured in 1974 on a Wrigley’s chewing gum pack. The scan was successful and the gum rang up at 67 cents. Photo: Wrigley’s® Juicy Fruit®
While UPC was mainly used in USA & Canada, it’s the EAN – European Article Numbering that has now become the standard barcode symbology in global trade. It is derived from UPC and is composed of 13 numbers.
An EAN defines a specific product from a specific manufacturer. Same EANs imply same items. The perfect ID system, and it’s global !
But nothing’s ever perfect, and it’s especially true when talking about EANs…
Juggling with IDs
After integrating with our first retailers we realized that only a few used EANs to identify their products. When not using EANs, most of them used MPNs – Manufacturer Product Number combined with other product characteristics, and little used internal IDs to which only they had the key of understanding. We also understood that making all these IDs match would be the only way we could build a global inventory. So we built our own ID system using what we knew of EANs and MPNs.
EAN KEY POINT:
- Unique for a product in a specific color and a specific size
MPN KEY POINTS:
- Specific to a brand
- Is the same for the different sizes of the product
- Changes for the different colors of the product

By Eliott, Dec. 2018
MORE READING
- The EAN symbology – http://www.computalabel.com/aboutean.htm
- The transformation of Retail – http://www-03.ibm.com/history/ibm100/us/en/icons/upc/transform