You’ll see here in this descriptive tutorial about, how to use scanner for scanning designed barcode labels, how to scan designed barcodes, how to scanners are of two types Advance and Classic. br We discussed here, Classic Scanner scans only Linear barcodes where as Advance Scanner scans both linear and 2D barcodes, how red light illuminates barcode and scanner captures reflected light and encoder encode reflected light into analogue signal, how converter convert analogue signal into digital signal and how decoder decodes digital signal to track product information as shown.