Oddly enough he isn’t the only one looking for this functionality. I don’t know how much more a unique number attached to almost every trade item in the world needs to be to find it’s way into an ecommerce platform such as Woocommerce.
Here’s the link in case your not familiar with what a UPC code is https://en.wikipedia.org/wiki/Universal_Product_Code
Looking forward to seeing a UPC option in Woocommerce soon.
Regards
