Mar. 03, 2025
In terms of history, the 1D barcode is definitely ahead of the game - the first attempts with this barcode technology were made as early as . In , products in the food trade began to be marked with barcodes, establishing the 1D code as the standard. This barcode technology has continued to develop unstoppably and is still indispensable in today's industry. At the end of the 80s, the 2D barcode was introduced, which at that time was mainly used in industrial environments. Today, this is no longer the case - 2D codes are also very common in the private sector. For example, by scanning a QR code with a smartphone, information on products, competitions, etc. can be retrieved.
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If we look at barcode technology in the industrial sector, it is primarily aimed at the traceability of products and the control of processes. Product labeling makes it possible to trace the material flow throughout the entire production process, and it is known at all times where the product is currently located, when it was processed, and much more.
When we talk about 1D barcodes, we are mainly talking about labels that are applied to the product. However, direct marking is also possible, e.g. by direct printing on cardboard boxes. The development of 2D matrix codes as well as the rapid increase in performance in image processing allowed the application of new, label-free direct marking methods, such as needle embossing, laser marking or inkjet, i.e.: Direct Part Marking (DPM). Compared to labels, DPM can withstand the most adverse production or operating processes and environmental influences, and also prevents product piracy. This opens up new possibilities for the user in the traceability of individual components or assemblies, as they are almost indestructible, permanently marked and identifiable.
In the field of 1D barcode reading, so-called laser scanners are used. Laser scanners exclusively read 1D codes, whereby they also detect damaged or polluted codes thanks to sophisticated algorithms. Depending on the arrangement of the barcode elements, parallel (ladder orientation), orthogonal (garden fence orientation) or omnidirectional (no orientation 360°) line scanners, raster scanners or oscillating mirror scanners are used. Laser-based scanners use a laser diode to scan the barcode label and detect the intensity of the laser light reflected from the light and dark elements of the barcode. This requires that a good barcode contrast is given.
The benefits of laser-based barcode scanners:Possible applications of laser-based barcode scanners:
Laser scanners have an excellent depth of field and are therefore able to identify barcodes on objects of different heights without any problems. Due to the large fields of view of up to 60°, one device already covers most conveyor belt widths. For this reason, laser scanners are ideally suited for use in courier, express and parcel services or in warehousing and materials handling, among other applications.
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If the rotational position of a code in a plane is not exactly defined and is variable in the application, a single camera-based code reader can reliably detect all codes regardless of their rotational position. This advantage becomes particularly clear in the case of codes with short bar lengths, since here a laser-based solution cannot achieve identically good read rates as the camera-based reader, even with two readers. In applications with poor code quality, for example due to weak contrasts or partial destruction, camera-based code readers achieve reliable reading results due to the corrective image processing algorithms. This reduces the need for manual postprocessing.
The benefits of camera-based barcode scanner:
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Camera-based code readers are characterized by their flexibility in selecting the code type. In addition to 1D barcodes, they identify both plain text and 2D codes such as the frequently used Data Matrix, QR (see Figure 2) or Maxi Codes via various image processing algorithms. A change from 1D barcodes to 2D barcodes can thus be made without any problems.
There is a trend from camera-based to laser-based barcode reading, but due to the wide range of applications, none of the identification technologies is suitable for all applications. The optimum technology for a particular application is the one with the best cost-benefit ratio in the individual area of conflict between technical and economic requirements.
A barcode scanner is a device that can scan various types of barcodes. Barcodes are small, standardized lines that display prices, track inventory, or encode other information. When you scan a barcode, the encoded data can be sent to your computer or other devices for interpretation. Barcode scanners are also known as handheld scanner portable scanners.
When purchasing a barcode scanner, there are several features to consider, including its compatibility with what devices, ease of keeping it clean, and what kind of information it can decode. Barcode scanners can connect to computers or mobile devices through Bluetooth or other wireless connections.
This is sometimes referred to as radio-frequency identification (RFID). RFID allows computers to identify items based on their magnetic characteristics. Some wireless bluetooth scanners can decode data sent to them using RFID technology. This makes it easier to track inventory, view your spending habits over a period of time, and even order products online using your . Retailers like Walmart use RFID to track inventory, while others like Tesco use it for customer loyalty cards.
Many barcode scanners can be directly placed on the barcode. These scanners are more convenient than handheld scanners but can be a bit bulky. If you want to use a scanner to capture business cards, IDs, or coupons, you may need to purchase a larger barcode scanner. You may also have to pay more for products specifically designed for these purposes. However, these scanners make it very easy to capture data from any card.
Having a scanner has many benefits, including the ability to scan items and immediately send the data to your computer. This provides professionals and consumers with a wide range of productivity and convenience. Scanners can be used for almost any type of data you want to scan. Some scanners can scan barcodes, while others can scan documents, business cards, IDs, or even text files. On the other hand, certain devices only allow you to scan barcodes or documents. Scanners are usually very affordable. You can find various types of barcode scanners for less than $100. This makes it possible to have a scanner at home, in your car, and at the office without breaking the bank.
Furthermore, barcode scanners are great for tracking your spending habits. If you want a better understanding of how much you're spending on groceries or other aspects of your budget, this can be a significant advantage. Many companies provide barcode scanners in their office supply areas because they make it easier for employees to manage their inventory and paperwork. You can purchase barcode scanners online or at almost any office supply store.
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