Barcode reader

This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Barcode reader" – news · newspapers · books · scholar · JSTOR (May 2023) (Learn how and when to remove this message)

A barcode reader or barcode scanner is an optical scanner that can read printed barcodes and send the data they contain to computer.^[1] Like a flatbed scanner, it consists of a light source, a lens, and a light sensor for translating optical impulses into electrical signals. Additionally, nearly all barcode readers contain decoder circuitry that can analyse the barcode's image data provided by the sensor and send the barcode's content to the scanner's output port.