Barcodes are available in different types, each with its own advantages and limitations. With a wide range of options to choose from, it can be overwhelming to choose the right one.
You need to be aware of the various barcodes if you want to select one. To help you out with the same we have come up with this comprehensive guide. In this, we included all the information related to different barcode types, their standards, and their varied applications.
Continue reading below to know which barcode variant works the best for your industry and provides much efficiency.
Let us dive into the discussion.
Table of Contents
What Are The Different Types Of Barcodes?
Barcodes are basically of two different types. They are 1D and 2D. Depending on the amount of data you intend to store, you will have to use the barcode type.
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1D Barcode
1D barcodes are nothing but linear barcodes with 12-digit UPC codes. They appear like black and white stripes with spacing.
The downside of the 1D barcode is that the barcode keeps becoming more longer if you try including more information to it.
However, majority of the applications, i.e., about 90%, use the 1D barcode.
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2D Barcode
2D code is almost like the QR codes and data matrix. Similar to them, 2D uses squares, hexagons, and other shapes to store the data.
In 2D barcode, it reads the data in two dimensions because of the horizontal and vertical arrangement of the data.
The upside of a 2D barcode is that although it is smaller than the 1D code, it can store more information of up to 100 characters. Here is another significant feature and merit of 2D code.
It can carry different kinds of information like the image, voice, website address, etc. Whereas, 1D code can only carry alphanumerics.
To read the 2D barcodes, you need a 2D camera image scanner. The prominence of this camera is that it consists of hundreds of tiny lights like the CCD scanner. These tiny lights, however, are in the arrangement of multiple rows. Whenever the light passes through the barcode, the scanner takes a digital picture, and then sends it to the software as a digital signal. It is the software’s job to decode this information.
Barcode Scanner
To scan any barcode, you need a specific scanner called the barcode scanner that transmits the scanned output to the computer. These barcode scanners are available in various types. You may have to do a little research to choose the right type that best suits your business.
What Are The Different Types Of Barcode Scanners?
Barcode scanners are majorly of four types based on the technology used. They are:
- Pen Type or Wand Type Readers
- Laser Barcode Scanners
- CCD Readers
- Imager Barcode Scanner (Camera-Based)
Let us learn about each type in detail here.
1. Pen Type or Wand Type Readers
The pen-type barcode scanner, also known as a wand-type scanner, resembles a pen or wand. Hence, the name.
Construction
These scanners feature LED light and a photodiode placed side-by-side in the tip of the pen.
Scanning Process
- You need to drag the tip of the wand across the barcode to read the code. Make sure you do it in a steady motion for all the bars.
- When you scan, the light gets reflected back to the scanner, and the photodiode present inside the scanner measures this light.
- It further generates a waveform to measure the widths between the white and dark bars, and the spaces in the barcode.
- While the white bars reflect the light, the dark ones absorb it. This process helps in replicating the bar and space pattern of the barcode.
- After the voltage waveform creates this duplicate pattern, the information is ready.
- This information is now in the digital reading that gets transmitted to another unit for processing.
Characteristic Features
The pen-type barcode scanners are highly durable and quickly scan the barcode images on the products or packages.
Price
These pen or wand-type scanners are the least expensive of all the scanner types available.
2. Laser Barcode Scanners
Laser barcode scanners are the most popular type of scanners widely used in retail.
Construction
As the name says, these barcode scanners use a laser to scan the code. The laser barcode scanners feature a mirror (lens), a laser beam (light), and a photodiode.
Scanning Process
The working or scanning process of a laser barcode is similar to the pen-type scanner. However, the results are not as accurate as those of the latter.
- The scanner shoots a laser beam at the mirror present in the unit.
- The mirror inside moves and as a result, the laser light passes across the barcode of the product in a straight line.
- After it reads the code, the light gets reflected back to the scanner, and the photodiode present inside the scanner measures this light.
- It further generates a waveform to measure the widths between the white and dark bars, and the spaces in the barcode.
- While the white bars reflect the light, the dark ones absorb it. This process helps in replicating the bar and space pattern of the barcode.
- After the voltage waveform creates this duplicate pattern, the information is ready.
- This information is now in the digital reading that gets transmitted to another unit for processing.
Characteristic Features
The most significant feature of a laser barcode is that it can read the barcodes irrespective of their orientation. And the best part, it can easily perform up to 500 scans in just one second.
Price
The laser barcode scanners are cost-effective.
3. CCD Readers
The Charge Coupled Device scanners are linear images.
Construction
The CCD scanners feature an imaging engine to capture the barcode image and then decode its characters.
Scanning Process
- The imagine engine of the CCD scanners consists of a multitude of tiny light sensors lined up in the head of the scanner.
- You can consider each sensor as a single photodiode that measures the light intensity.
- When reading, the scanner shoots these tiny directly onto the barcode.
- The sensor in the unit measures the voltage of the ambient light directly that lies in front of each lightbulb. Here, it does not measure the light.
- This voltage measurement captures the barcode image and presents it as a digital snapshot.
Characteristic Features
The Charge Coupled Device scanners are the most popular scanners used in point of sale (POS) applications. They give you the most accurate results.
Price
The CCD scanners are very economical, highly durable, and require less maintenance when compared to other types.
4. Imager Barcode Scanner (Camera-Based)
The imager barcode scanners use a video camera to capture images.
Construction
These scanners feature camera, and image processing techniques.
Scanning Process
- Using the camera integrated within the unit, these devices capture an image of the barcode.
- After capturing, they use sophisticated image processing techniques to decode the code.
Characteristic Features
The image barcode scanners are capable of reading almost any barcode virtually. They are high-speed devices and can scan multiple codes in one pass.
These are 2D barcode scanners that can scan any type of 2D barcodes like QR codes, DataMatrix barcodes, and linear barcodes.
Price
The imager barcode scanners are more expensive than the linear and laser barcode scanners.
What Are The Other Types of Barcode Scanners?
Barcode scanners come in various types than the ones mentioned above. Here is a list of the other types of scanners:
- Fixed Mount Barcode Scanners
- In-Counter Barcode Scanners
- Presentation Barcode Scanners (Also On-Counter Scanners)
- Handheld Barcode Scanners
- Mobile Computer Barcode Scanners
- Wearable Barcode Scanners