The easiest way to generate a bar code is to just use a bar code font in a string indicator. I've got a 3 of 9 font on my system that I don't know where it came it from (printer or Word installation maybe). Other formats are available - do a web search for barcode fonts. If you need to read bar codes, get a keyboard wedge type. These go between the keyboard and pc and give text input just like typing. No special VIs are required. Good luck.
