The type of scanner that reads printed barcodes is known as a barcode scanner. This device utilizes a laser or imaging technology to decode the information contained in the barcode patterns, translating them into data that can be processed by computers. Barcode scanners are widely used in retail, inventory management, and logistics for tracking products and enhancing operational efficiency. They reduce human error in data entry while accelerating the transaction process, making them vital tools in modern supply chain and commerce environments.