January 17, 2026
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How Do Barcode Scanners Work?

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The black and white stripes on things you buy at shops are called a barcode.
How Do Barcode Scanners Work?
The black and white stripes on things you buy at shops are called a barcode. A barcode holds information like the name, price and how many of an item there are. A barcode scanner is a machine that can read those stripes and tell a computer about the item. A barcode scanner consists of three parts—
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