As industries quickly began adopting this innovative technology, it became clear that there needed to be a uniform standard. Enter the Uniform Code Commission (UCC) of the early 70s. They laid down the first barcode symbol verification guidelines, famously known as “Traditional Measurements”. Among the visual checks, it required:
- The correct characters in the code.
- An appropriate contrast.
- Standardised widths for bars and spaces.
- Adequate quiet zones.
- A consistent barcode height.
Yet, as with all pioneering efforts, imperfections surfaced. Printing companies found that these guidelines sometimes flagged good barcodes as bad and vice versa. It was evident that a more sophisticated approach to barcode verification was essential.