Barcode Verification

Are you a manufacturer or generate bar-codes across the Pharmaceutical, Food and Beverage, Defence, Automotive, Consumer Goods or Production Industry?

If so, you will understand the importance of  bar-code accuracy, and the need for keeping recall and reprints to an absolute minimum.

Codes need to be reliably recorded and inspected to meet standards in compliance led industries. InterVision Global pre-program the systems with parameters, in which the code must read. The system can be added to and adapted against quality parameters detailed by the customer.



Barcode verification assess the quality of the code through several parameters.

Linear (1d) the data is within the lines and the width.

2D code carries information in both X and Y axes this is machine readable code.

Direct part marking is a process to permanently mark parts with product information including serial numbers, part numbers, date codes, and barcodes.

Bar-code readers

There are a number of manufacturing benefits to using bar-code readers, including eliminating the cost of reprinting runs. By ensuring the code is always visible and readable throughout the production run, detecting errors at the point of quality issue with the coding process, the printers can highlight when the issue started.

Software and Reporting

​The use of InterVision Global Perceptor software allows the generation of real time reporting throughout the run. In compliance with industry regulations, reports can be printed and  saved onto a storage archive.


Verifiers are set using the pre-established industry requirements fixed through the sector compliance.

Barcode readers throughout a production line can read codes differently depending on the location with in the run and the speed in which the item is sent through production.

Verifiers allow for codes to be read and verified against industry standards- with the analysis of the code and will generate data with the ability to save and store this on a secure database. Standardised performance throughout the line and ensure the correct information and data is gathered and stored.

Stretch and compression
The physical mark will often be printed whilst the product is being transported past the marking head. The speed of the transportation past the marking head can vary.
reflective lighting can distort codes through the lenses- ensure lighting and angles are accurate ensures a reliable system.
the repeatability of the contrast levels between foreground (characters) and background not necessarily the actual level of contrast
Busy backgrounds with transparent codes as an overlay can course false rejects
Ensure that the characteristics of the printed mark is not in any way effected by the print speed/ linear speed of the product passing by the printer

Code Reading

The concept of Barcode Reading is not a new one- PCM (process control matrix) is visible in most manufacturing processes for checking the code is within the parameters. Validation of Barcode Reading will check the format of the data within the code, but not through to the quality.


Verification will check across several parameters and ensures the code is aligned to the global standards needed for the products industry and market- ensuring it pulls through all compliance driven insight. Verifiers add a level of security throughout the production run, where it will determine with the printer the perimeters that have not been met and where this has started.

Dimension for the Best Verification…

To determine the best verification tool for your manufacturing process- assess the code type and size.  The X-Dimension is the starting point. Displayed in mils or 0.001 of an inch the camera resolution needed must be below or equal to this requirement.

The next sizing is the field of view of the code- so the smallest to the largest the field will be needed to reach.

The material, surface of the area the code is being printed also has a vast impact. This will be enhanced by the choice of lighting and the illumination used to ensure the verification device is able to correctly determine the code on the surface without additional trouble, such as reflection or blurring.

Specific lighting angles required

Curved or oddly shaped products will generally need verifiers with height stands to allow the code to be positioned to the camera. Using the Perceptor software, InterVision Global is able to communicate with the camera whereon the part the code will be present.


Printed Labels Lighting

30° 90° & Dome

DPM, Textured and Curved Lighting Requirements

ISO Standards


Barcode verifiers and software report on code quality parameters and validate data for conformance to ISO/IEC 15415, ISO/IEC 15416, and AIM DPM (ISO/IEC TR 29158) guidelines. Three major verification standards govern 1D, 2D, and direct part-mark codes.


Marked through Label: ISO 15416

ISO 15416 requires 10 individual scanning lines. This allows for the quality of the code and the visibility to be verified throughout the entirety of the image.

It will check the thickness, the contrast, modulation, decode, defects of the code to ensure all meets the industry standards.

If at any point through the 10-line analysis the code does not pass the set parameters, it will be rewarded a grade between A-F and the average grade by the end of the analysis will determine if the code is a pass or a fail.

Like 1D codes, 2D are still assessed against 8 parameters and graded Pass / Fail. If the code can be decoded it will pass on to the next tests, if not, it will fail automatically. The following tests include: Contrast, modulations, fixed pattern damage, axial and grid non- uniformity.
Using the same general parameters as ISO 15415, DPM has a few additionally checks to be certificated as an ISO 29158 CODE. As it is DPM the background and shaping of the object can dramatically affect the codes readability. The dividing line is between light and dark cells- this uses persist algorithms.

US DoD MIL STD 130 requirements goes back over a decade to when the first MIL STD 130L was released in 2004.

US government track purchasing details, maintenance logs, and out-of-commission dates in a central registry. MIL-STD-130 Data Matrix codes must meet both readability (print quality) and data formatting requirements. Print quality requirements can be met through measurements in accordance with ISO 15415, AS9132, or AIM DPM. The data must be formatted in accordance with ISO 15434 using AI’s, DI’s or TEI’s.


FDA standards have clearly stated by 2020 all medical devices need to contain an UDI (Unique Device Identifier). This includes the need for all Medical Devices to contain a barcode that has access to information through from lot numbers, serial numbers, and expiration dates. This information must be shared directly with the FDA’s Global Unique Device Identifier Database (GUDID) System.


Global Manufactures with barcode on their products into retail, transport, food and beverage industries use GS1 standards to create and report on barcodes. The essential compliance is no two bar codes of 1d, 2d can contain the same information.

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