Without even realising it, you encounter barcodes and barcode scanners countless times a day. They’re so embedded in our daily routines that we barely notice them anymore. Think about your last trip to the supermarket: how many products went through the checkout without a barcode? Virtually none.
How does a barcode scanner work?
Before we get into scanners, let’s quickly recap how barcodes themselves work.
A barcode is a printed label or smart tag that contains encoded information about a product. It gives a physical object a digital identity that can be captured and processed by a computer. Barcodes are used in almost every sector—from retail and logistics to healthcare and education.
A barcode scanner is the device that reads this encoded data. It captures, decodes and then transfers the information to a computer system. Every scanner includes three key components:
1. Illumination system: Lights up the barcode, traditionally using red light.
2. Sensor: Detects the light reflected back from the barcode.
3. Decoder: Converts the reflected pattern into usable data and checks for errors.
As the illumination system shines light on the barcode, the sensor records the reflected pattern. The decoder then converts this pattern into digital information and performs error checks to ensure the scan is accurate. While many scanners still use visible red light, modern imaging scanners may only use a laser for aiming (though the beam can still be harmful to the eyes, so never point scanners at people).
Types of barcode scanners
Barcode scanners come in many shapes and sizes, but most fall into one of three main categories:
Fixed Scanners
These scanners are mounted in one place and connected directly to a terminal—much like the familiar checkout scanners in supermarkets. Products are passed in front of the scanner, and data flows straight into the system. Handheld corded scanners fall into this category too; while they offer some movement, they are intended for use at a fixed workstation.
Portable Scanners
Portable scanners are battery-powered and designed to be carried around. They store scanned data in onboard memory and upload it to a computer later. Also known as data loggers or companion scanners, they are rugged devices suitable for both indoor and outdoor use.
Wireless Scanners
Wireless scanners provide full mobility without the need to store data for later. They transmit scanned information instantly to a computer or network via Wi-Fi or other wireless technologies. Many models offer extra features such as text messaging or voice notes, making them ideal for high-productivity environments.
Barcode scanners at Osiris
Osiris Technical Systems supplies a wide range of barcode scanning solutions, including:
- Batch Terminals
- Cabled Scanners
- Data Collectors
- Driver’s License Scanners
- Mobile & Handheld Scanners
- Stationary Scanners
Who uses barcode scanners?
Barcode scanning technology is used across nearly every industry, and far beyond the grocery aisle. Organisations rely on barcodes to streamline operations, improve accuracy and track critical information.
Industries that use barcoding daily include:
- Retail and Supermarkets
- E-commerce and Online Businesses
- Healthcare Providers
- Schools and Universities
- Sports and Entertainment Venues
- Government Departments and Agencies
For more information on barcoding solutions, barcode scanners and related technologies, contact Osiris Technical Systems on 0861 674 747 or email info@osiris.co.za