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2D Barcodes for Quality Control Managers

Here’s what quality control managers need to know about 2D barcodes and how to make a seamless transition.

Set your quality standards high with 2D barcodes?

2D barcodes can hold a large amount of data in a small amount of space, including batch numbers, expiry dates and traceability info, and can be scanned by smartphones or supply chain systems. But if that data isn’t correctly encoded or the barcode isn’t printed to a high standard, it may not scan, potentially leading to costly recalls or reputational damage.

As a Quality Control Manager, your role is critical. It’s essential to have checks in place throughout your processes to validate the data and ensure consistently high print quality.

 

Benefits of 2D Barcodes for Quality Control Managers

Identify packaging variants

2D barcodes are a simple but powerful tool for managing multiple packaging formats or contents across SKUs.

For example, if your apple juice product is made from different apple sources but sold under the same brand, you might need different labels, e.g. one with a “100% NZ apples” claim and one without.

By assigning a 2D barcode to the packaging variant, you can identify and verify the correct label is applied during production. These codes don’t have to be scanned at POS but can be used internally for packaging identification and control.

Built-in error protection

Unlike 1D barcodes, 2D barcodes are equipped with built-in error correction. This means they can still be read if part of the code is damaged, whether scratched, smudged or ripped, helping to reduce scanning issues across the supply chain.

How to transition to 2D Barcodes

 

Step 1: Implement a 2D barcode quality plan

Incorporate barcode quality checks into your SOPs to reduce errors, rework, and compliance issues.

 

1. Data validation processes

If you’re printing variable data like batch numbers or expiry dates, set up validation rules to ensure each 2D barcode contains accurate, up-to-date information. This might involve integrating your labelling systems with production or ERP data to reduce manual input.

2. Barcode print quality checks

Make visual and machine-based barcode checks a standard part of production.

  • Print a horizontal line ~3mm above the barcode symbol to visually detect worn printheads.
  • Schedule regular maintenance for your printers, including routine cleaning of printheads.
  • Use in-line scanners to intermittently check barcode readability during production runs.

Talk to Reynolds about selecting, integrating and maintaining reliable printing and labelling systems suited to your production environment.

2D barcode implementation checklist for quality control managers

  • Use matte label stock – especially for products stored in cool or damp environments, where gloss labels can impact scan performance.
  • Perform intermittent barcode scans to check readability. Some printers have built-in scanners; otherwise, consider investing in a separate verification scanner.
  • Make sure labels are applied flat and wrinkle-free – avoid applying barcodes around corners or over curved edges.
  • Follow GS1’s recommended barcode sizes and quiet zone specifications.
  • Test your 2D barcodes regularly by submitting samples to GS1 New Zealand for a Barcode Check. This helps verify that the correct Application Identifiers (AIs) and data have been encoded and that the barcode meets global standards.
  • Perform regular visual inspections and digital checks to ensure data accuracy and high print quality.

FAQs

How do I get started with 2D barcodes?

Begin by speaking with your solution providers, like Reynolds, early in the process. They can help you choose the right coding, labelling, or data capture solution for your business, ensuring a smooth and efficient transition to 2D barcodes.

What is GS1 Barcode Verification?

Barcode verification ensures your 2D barcodes scan first time, every time. You can submit label samples to GS1 New Zealand for a Barcode Check.

They will assess your barcodes for compliance with global GS1 standards, including correct data structure, size, colour, print quality and numbering. After testing, you’ll receive a Barcode Verification Report with feedback and any required improvements.

Verification is especially important if you're supplying products to large retailers, such as Woolworths/Countdown, where 2D barcodes must meet strict data and quality requirements. Contact GS1 New Zealand for guidance on barcode verification.

What should be included as human readable interpretation (HRI) text?

HRI refers to the printed text that mirrors the data in the barcode. With 2D barcodes holding lots of information, it’s not always practical to print everything. However, the GTIN must be printed below the GS1 DataMatrix code. This ensures the product can still be processed manually at retail or in export markets if the barcode isn’t scannable.