DPM Barcode Basics: Cell Modulation

The increasing use of DPM barcodes in a variety of applications is also giving rise to questions and concerns about why they do not always work as expected. Isn’t the whole point of direct part marking to enable these symbols to be imaged onto virtually any surface and still be scanable? The simple answer is—no. […]

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DPM Barcode Verification

Direct Part Mark or DPM barcodes pose a special set of challenges for verification. As the name implies, DPM barcodes are imaged directly onto a (usually) metal substrate using a variety of marking techniques. This alone presents challenges since both the method of marking can vary and the substrate can also vary. Added to that […]

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ANU Error

2D Symbol Verification

Those of you who are familiar with 1D barcode verification will be familiar with some of the ISO parameters in 2D verification, but there are also some aspects that will be very unfamiliar. These differences are even greater than one might think considering that 2D symbols can be printed in two very different ways.  2D symbols […]

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Misregister QR

Your Barcode Doesn’t Scan: Why?

When your barcode doesn’t scan, it is like falling off an emotional cliff. With no information other than the deafening silence of no “beep”, how do you determine what’s wrong? The obvious answer is to use a verifier. Usually—but not always—when a scanner cannot decode a barcode, a verifier can. This is because a verifier […]

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GS1 Data Matrix 4

UDI Barcode Verification: Most Common Problems

Whether you are using 1D barcodes such as GS1-128 or 2D symbols such as Data Matrix codes for UDI compliance marking, UDI barcode verification is of paramount importance for assuring barcode quality. Our test lab has seen a lot of UDI barcodes and there are some recurring problems to be avoided. Here are some of […]

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Barcode Verification is Obsolete

Apologies for the hyperbolic title—I must have gotten caught up in all the election year sensationalism. However, this is a statement of belief we in the barcode quality community increasingly hear. It is driven by several factors but the availability of very aggressive scanners is the most often cited. “It stands to reason,” say the […]

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How to Buy the Right 1D/2D Verifier

Barcodes are complicated, and so is the challenge of buying the right 1D/2D barcode verifier. Like many complex challenges, the right way to take it on and make a smart buy is to break it down into its component parts. Here are ten of those parts: Field of View: make sure the verifier you are […]

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small casting

DPM Verification of Barcodes

First, what is a DPM or Direct Part Mark barcode? It is a barcode that is imaged directly onto the surface of a part or sub-assembly, rather than being imaged onto a tag or label which is then somehow affixed to that part or sub-assembly. DPM barcodes can be imaged onto cast metal parts such […]

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hand of a lab technician holding blood tube test with bar code on laboratory and background a rack of color tubes with blood samples other patients / hand doctor holding a blood tube test with bar code for analysis in lab

Verifying PDF and JPG Barcode Files

Our barcode test lab has historically recommended that clients send us actual barcode samples in their final form. We would get labels, packages, subassemblies, component parts of machines and devices, aluminum soda cans, surgical devices, medical supplies—even the occasional bottle of wine or distilled spirits. We did this because the best way to anticipate whether […]

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Barcode Data Structure

It used to be that barcode quality was all about print quality. Even today, print quality is the only issue addressed by the ISO specifications for 1D and 2D barcodes. But as barcodes have been adopted into more industries and usages, the way the data is encoded has become another important barcode quality consideration. Data […]

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