With the barcode scanner tool in Store Commander, you can update stock on products and combinations by simply scanning the barcode on the actual product!
Once in the interface, select wether you want to add or remove stock and enter the quantity. You can then place your mouse in the 'Code' field and scan the barcode on your product.
The product is found instantly and displayed in the panel.
To validate, click on 'Validate'.
You could also validate the stock movements automatically if you want by ticking the corresponding option 'Automatically validate changes'.