From batch numbers and expiry dates to barcodes and 2D codes, manufacturers rely on printed information to support traceability, compliance, and supply chain efficiency. However, even the most advanced coding systems can occasionally produce unreadable or incorrect codes. When this happens, the consequences can range from rejected shipments and production delays to costly product recalls.
This is why code verification in manufacturing is becoming an increasingly important part of production processes across a wide range of industries.
Code verification is the process of checking that printed codes meet predefined quality and readability standards before products leave the production line.
Verification systems use cameras, scanners, and specialised software to inspect codes and confirm that they can be read accurately throughout the supply chain.
These systems can verify a range of printed information, including:
Rather than simply checking that a code exists, verification systems assess whether it is printed clearly enough to be reliably scanned and interpreted.
A barcode that appears acceptable to the human eye may still fail when scanned by a retailer, distributor, or logistics provider.
Common issues include:
Without verification, these problems may go unnoticed until products have already entered the supply chain.
At that stage, resolving the issue can be far more expensive than identifying it during production.
Traceability requirements continue to increase across many sectors, particularly food and beverage, pharmaceuticals, healthcare, and manufacturing.
Businesses are expected to know where products have come from, where they are going, and how they can be tracked if an issue occurs. Accurate coding plays a critical role in this process.
Verification helps ensure that every code printed on a product can be scanned successfully and linked back to the correct production data. This improves visibility throughout the supply chain and helps manufacturers maintain confidence in their traceability systems.
Production errors can be costly.
If coding issues are only discovered after products have been packaged, palletised, or shipped, businesses may face significant rework costs. Products may need to be relabelled, repackaged, or even scrapped entirely.
By identifying coding problems immediately, verification systems help manufacturers take corrective action before defective products progress further through production.
This can reduce:
The result is a more efficient and reliable production process.
Many industries operate under strict regulations relating to coding accuracy and traceability.
Retailers, distributors, and regulatory bodies increasingly expect manufacturers to demonstrate that printed codes meet recognised standards.
Verification systems can help businesses comply with these requirements by providing documented evidence that codes have been checked and graded according to established quality criteria.
As supply chains become more automated, code quality is becoming just as important as the information contained within the code itself.
The terms verification and validation are often used interchangeably, but they serve different purposes.
Validation confirms that the correct information has been generated and assigned to a product.
Verification confirms that the information has been printed clearly enough to be read accurately by scanners and vision systems.
Both are important, but verification focuses specifically on print quality and readability.
The growing adoption of 2D barcodes and increased focus on product traceability means code quality will become even more important in the coming years.
Initiatives such as the GS1 Sunrise 2027 programme are encouraging businesses to adopt more advanced coding methods that contain greater amounts of product information.
While these developments offer significant benefits, they also place greater demands on printing accuracy.
Manufacturers investing in code verification today will be better positioned to meet future requirements and avoid potential disruptions as industry standards continue to evolve.
Coding errors can have far-reaching consequences, affecting everything from operational efficiency to customer satisfaction and regulatory compliance.
Implementing effective code verification in manufacturing helps businesses ensure that printed information is accurate, readable, and fit for purpose before products leave the production line.
As traceability requirements continue to increase and supply chains become more dependent on automated scanning technologies, verification is quickly moving from a desirable quality control measure to an essential part of modern manufacturing operations.
For manufacturers looking to improve coding reliability, reduce waste, and strengthen traceability, investing in code verification can provide significant long-term benefits.
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