If you haven’t heard about Datamatrix codes, you should know that they are two-dimensional barcodes. If the code is destroyed or has up to 30% of its code missing, you can still read it using specialized camera equipment and software. Likewise, Datamatrix readers can read these codes with varying accuracy and reliability. To learn more about DataMatrix readers, read on.
Datamatrix codes are two-dimensional barcodes
A common example of a 2D barcode is the Datamatrix code. These barcodes are similar to QR codes and have been widely adopted in industrial production. They are applied as permanent markings using a laser or needle engraving process, and they are also used in printed code images. For example, the German Post Office and the pharmaceutical industry use these barcodes. They can be very small but can still be used to mark small components.
One-dimensional barcodes are generally used for labeling goods. Two-dimensional barcodes have a higher data density and larger memory than one-dimensional codes. Datamatrix codes are sometimes referred to as stack codes, as they consist of stacked one-dimensional barcodes. In addition to dimensional codes, matrix codes are also common and contain square or rectangular patterns. In addition, DataMatrix codes are more secure than one-dimensional barcodes.
Although the data contained within a Data Matrix symbol appears flawless to the human eye, it may not be readable to some barcode readers. Knowing why a Data Matrix symbol cannot be decoded can save operators valuable time and money diagnosing and fixing issues. Decoding failures can cause lost data or even the complete incapability of a barcode to function properly. Below are some common causes of unreadable barcodes and how to prevent them.
A long string of zeros may result in large blank areas within the Data Matrix symbol. This causes scanner synchronization problems. This is because a pseudorandom number, R(n), obscures the actual length of the data bytes and their position within the byte stream. Acacia Technologies claims that a patent partially covers the Data Matrix. The company has contacted users of Data Matrix to inform them of this patent.
Datamatrix reader can be read with specialist camera equipment and software:
Normally, specialist equipment is used to check the data-matrix encoding on an item. Such equipment ensures that the code is in accordance with industry standards and is readable for the life of the component. If a reader camera is not available, the code can still be read by the eye using a reading lens. It can be read for inventory control and movement tracking purposes. Data Matrix codes can be read with specific mobile applications and camera equipment.
