Code 128 encodes the full set of letters, numbers and symbols in a compact form, which makes it the workhorse of shipping and internal tracking.
Why it is popular
It is dense, reliable and supports any alphanumeric string — order numbers, SKUs, batch IDs and more.
Where it is used
Carrier shipping labels, warehouse bins, asset tags and supply-chain documents.
Printing tips
Keep adequate quiet zones, print at sufficient resolution, and avoid scaling that blurs the narrow bars.
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