Barcode scanners play a quiet but important role in everyday business. From small retail shops to large warehouses, they help track products, manage stock , and speed up billing. If you have ever wondered how a POS barcode scanner or a handheld barcode scanner actually works, this guide explains it in a clear and practical way . This article answers common questions, uses real-life examples, and helps you understand how different barcode scanners fit into daily business operations. What Is a Barcode Scanner? A barcode scanner is a device that reads printed codes made of lines or patterns. These codes hold product information such as name, price, or stock number. When the scanner reads the code, it sends the details to a system that shows the data instantly. Most businesses use barcode scanners to reduce errors, save time , and keep records accurate . Whether it is a shop scanner at a checkout counter or a portable scanner used on the move, the purpose stays the same—quick an...