A barcode scanner is a device that reads printed barcodes and converts them into digital data. In cybersecurity, barcode scanners are used to streamline inventory management, access control, and authentication processes. However, they can also introduce security risks if malicious barcodes are scanned, potentially leading to unauthorized access or malware installation. Secure configuration and regular updates are necessary to prevent exploitation. Barcode scanners may connect via USB, Bluetooth, or other wireless technologies, and are commonly used in retail, logistics, and healthcare environments. Proper security measures ensure that barcode scanners do not become a vulnerability in an organization's network.