Does your computer have a record for that barcode on it? The barcode is just a code, it doesn't contain all the information about the product etc. There has to be a record on the computer for the software to match the code to.
Thanks alot. I'll go check that out now. I wrote software for the cuecat along time ago using the encrypted string. I lost it in a reformat though. Maybe I will have to write something new up. Thanks again.