I've had a cuecat barcode scanner sitting around for over 10 years. Basically it connects to a PS2 port (apparently there is a USB version) like a keyboard and spits out a barcode when scanned. Nice!. The annoying thing is that it is "encrypted". What I set out to do is; - unencrypt the barcode in software on the arduino - i didn't want to cut into the Cuecat in case I broke it, not hard to replace, but tha ...