When does a product need a new bar code?
Breaking the Rules
When does a product need a new bar code? Normally, the answer to that question is fairly straightforward. When a major new ingredient is added the introduction of Banana Nut Cheerios, for example the new formulation receives its own UPC bar code, including the unique 12-digit Global Trade Item Number (GTIN) encoded in the bar code. But what if the changes made to a product are more subtle? What if