Barcode scanner is a device that reads and interprets the information stored in a barcode. Barcodes are used to store data in a way that can be easily read by machines, and are commonly used to track products in retail, inventory management, and shipping applications.

A barcode scanner typically uses a laser or LED to scan the barcode, and then converts the pattern of black and white bars into a digital code that can be read by a computer. The scanner may be handheld, fixed-mount, or integrated into a larger system.

There are several types of barcodes, including UPC, Code 39, and QR codes, and different barcode scanners may be optimized for different types of codes. Some barcode scanners can also read barcodes from a distance, or decode multiple barcodes simultaneously.

Overall, barcode scanners have revolutionized the way that businesses manage and track their inventory, and have become an essential tool for many industries.

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