You should use a DPM (Direct Part Marking) code reader if you need to read barcodes that are etched, engraved, or stamped directly onto the surface of a part. 

DPM codes are commonly used in manufacturing and industrial settings where traditional barcode labels may not survive or may not be practical. Here are some reasons why you should use a DPM code reader:

1. High Durability: DPM codes are designed to withstand harsh environments, such as extreme temperatures, chemicals, and abrasion. DPM code readers are built to read these codes reliably, even when they are partially damaged or obscured.

   
   

2. High Accuracy: DPM code readers are highly accurate and can read codes at high speeds, which can help to increase efficiency and productivity in manufacturing and industrial settings.

   
   

3. Improved Traceability: DPM codes can help to improve traceability in manufacturing and industrial settings by providing accurate and reliable data about parts and products. DPM code readers can capture this data quickly and accurately, which can help to improve quality control and reduce the risk of errors or defects.

   
   

4. Cost-Effective: DPM codes are often more cost-effective than traditional barcode labels because they can be directly marked onto parts, eliminating the need for additional labeling or marking equipment. DPM code readers are also often more affordable than other types of barcode readers.

   
   

Overall, if you need to read barcodes in a harsh environment or if you need to improve traceability and accuracy in your manufacturing or industrial processes, a DPM code reader may be the best choice for you.

Video: https://www.youtube.com/watch?v=3IBfalzLX1w