A barcode reader (also called a barcode scanner) is a device that operates by optically scanning printed barcode labels, reading the information they contain and sending the data to a computer or other device. Like other computer scanners, the device uses a light source and lens to translate optical signals into electronic data. Most barcode readers also contain circuitry that can decode the data the barcode image contains and send this information to other devices through an output port.
Barcode readers are an effective way to identify and track a wide range of items and provide increased efficiency and productivity for businesses. They can be used to streamline and digitize business processes by providing a quick and accurate way to identify and track items. They remove the possibility of human error when entering details manually into computer systems and are extremely versatile and easy to use compared to other methods.