The WooCommerce Ultimate Barcodes plugin provides a simple solution to display the product barcodes in the order details. This is really useful when you’re processing new orders, because you could see immediately the barcodes and scan them from an external application.
To enable this feature go to the product barcode settings, and under the “Display in” section, you should be able to see the option below:
You just need to enable it, and you will see the product barcodes being displayed in your WooCommerce orders, like below:
