The barcode scanner must be set up to emulate keystrokes with a return at end. This is the default setting for most barcode scanners. You can test this in a program that accepts keyboard input. For example Word or a web page. After a scan of a barcode it show should show the contents of the barcode, and a return (line feed) at end. There is no setup of the barcode scanner in iPacky. Look up the manual for your barcode scanner if any problems.