I ordered/received the recommended barcode scanner. Went with USB because although my desktop doesn't have USB, I'll be getting a new one soon and the advantages are great. And -- my laptop is newer, has USB (and I can carry it to the books!). Took it for a spin after unpacking and was well pleased! ... And, of course, your good email with the unlock code came right along here, and the cd-rom appeared today.
I'll put it this way. Apart from the quality of the product, the other main reason to use Readerware is the quality of the support!