There shouldn't be a problem to read the barcodes directly from the screen (we have tested on LCD screens and it reads them). You can also create a small sample report just for the purpose of the test that will print only 4-5 barcodes.
There are even apps for smartphones that can scan barcodes and tell you the value. In fact, with such an app we have tested the barcodes from your screenshots and the codes are correct :).
All the best,
the Telerik team