Thanks for posting to the Community, @doctorlock.
I'd recommend visiting the market place to find the application that you need: Apps for QuickBooks Desktop. There you can search for the app to work with a barcode scanner and able to get the data into QuickBooks.
The results will be sorted by the user's most searched applications.
Additionally, here's an article as your reference for more details about making data entry faster using bar code scanners: Set up and use barcode scanning in QuickBooks Desktop.
If you're more interested in API, you can check out with our developers. They can provide you this data. I would encourage you to visit their Community website. Then, click the QuickBooks Desktop tile and the Ask a question button.
Feel free to place a comment below if you have more questions in mind. I'll be around to help. Stay safe and well!
