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Home » How Does Barcode Scanners Work? [Types & Functions]?

How Does Barcode Scanners Work? [Types & Functions]?

How Does Barcode Scanners Work

What are Barcode Scanners?

Every day, we interact with objects that were designed for the purpose of making our lives more convenient. Computers, smart phones and cars are just a few of the first items that spring to our minds. However, there are numerous other innovations which we do not even think about how they impact our lives. Anytime you buy a product that is labelled with a barcode reader of some kind. which is used to read the information in the label. Have you ever taken time to consider what a barcode scanner actually is? What is it that makes it work? What is the reason it was created in the first place? We’ll cover everything and offer guidelines on what you should look for in a barcode scanners to suit your needs.

Types Of Barcode Scanners

How Does Barcode Scanners Work

Based on the distinctive features and the technology they employ Barcode scanners are one of the following kinds:

1- Laser Scanners

The laser scanners that are used for these types make use of laser beams as the source of light. In this case, either a moving prism or mirror that is reciprocating will scan laser light over the barcode. A photodiode is a device that measures the amount of light that is reflecting off of the barcode.

2- CCD Readers

They are also referred to by the name of LED scanners. They employ many tiny sensors that are arranged in a row on their heads. Each sensor is small and is able to measure the intensity of light directly before it. There are hundreds of sensors lined up in a row, and they form the voltage pattern. 

They have a similar pattern to that found that is printed on the barcode that the scanner. The voltages across each sensor in the row are determined. Thus, CCD Reader works by measuring the ambient light emitted by the barcode.

3- Pen-Type Readers

Pen-type readers feature the ability to light sources and an image-diode. They are situated next to each next to each other on the edge of the pen-like device. The person who holds the pen needs to move the pen’s tip across the bars at a regular speed to detect the barcode. As the pen’s tip passes through every space and bar in the barcode the photo-diode determines the intensity of light reflecting back to the light source. 

The photo-diode generates waves that measure the size of the bars and spaces within the barcode. Bars that are dark absorb light while spaces that are white reflect it. Thus, the voltage waveform produced by the photo diode is an illustration of the design of the bar and space that is the design of the barcode.

4- Camera-Based Readers

These are two-dimensional scanning scanners, which use cameras and image processing techniques to scan barcodes.

How Does a Barcode Reader Work?

Let’s find out what exactly is a barcode scanner and how it works? Barcode scanners fall into the following sub-categories

  • Handheld– These are the most well-known models and come either corded or cordless versions.
  • Presentation is a hand-held scanner that allows users to scan a variety of items. It’s also referred to as a multi-plane scanner.
  • In-counters scanners are like a presentation scanner however it is placed within the counter and not being on top.
  • Mobile computers combine the functions of barcode scanners and PC.
  • Fixed-mount- It’s an example of a hands-free scanner that reads barcodes with sensors. The sensors are activated when objects pass by their sides.
  • Wearable scanners usually worn on the arm hand, or finger.

Why Do Businesses Use Barcode Systems?

It’s true that barcodes were first invented in 1951, but they weren’t profitable until 1970s. It’s difficult to come across another technological innovation created in the 50s that is still used to this day.

Barcodes can bring a lot of advantages for businesses This is the reason why this technology that’s been around for 70 years hasn’t been changed in a significant way.

1. Barcodes are an established and universally used technology that has been used for decades.

The benefits of barcode’s durability in the world of commerce are twofold. First, barcode scanning has been around for a long time to demonstrate it to be a viable method of identifying goods and services. Furthermore, these little squares are so widely utilized in the present day that there are many affordable methods for any company to benefit from an automated barcode scanners (more on that in the following paragraphs).

For instance, you’ll never encounter a store that does not scan barcodes. This is absurd. Every distributor, company or warehouse, wholesaler or retailer in the business world must know about the barcode scanners technology.

2. Barcodes mitigate error.

Humans make mistakes and no one knows this more than the people who work in the eCommerce world. If you are able to outsource an employee task in the hands of technology, you’ll decrease time and minimize mistakes.

Then, extrapolate it to the entire system that include receiving, shipping as well as the selling and buying millions of dollars’ worth of product. The number of errors introduced could be devastating. Barcodes can help prevent this from happening by organizing the method by which data about products are recorded and monitored.

The most important thing to remember is that mistakes can be costly. They result in bad customer experiences as well as waste time and cause bottlenecks in your logistical pipeline.

3. Barcodes are not expensive and are discreet.

If you purchase tomatoes at the supermarket and find an QR code on the bottom, it could be a little confusing. But, no one bats at barcodes. They’re everywhere. Even when taking up a large amount of space on the product, they’re ubiquitous enough to be accepted. This makes them a great option to use for branding purposes.

Additionally, barcodes are inexpensive. The technology has been in use for more than a half century, and it costs a tiny amount to print and generate. Barcode scanners are cheap (well less than $75 for the best one) and are widely used as the most reliable method of scanners for products.

If you own things to sell or raw materials, finished products, tools, equipment, or anything else in between, inventory management using barcodes is a lucrative benefit.