you have to be way more descriptive than that. Plus did you searcht he forum for "barcode"?
What I mean by more descriptive is: You you want to know how to add barcodes to a report
Or are you thinking about scanners that simply plug into a pc using a "Y" cord that has the other connection going to the keyboard.
Are you thinking about Handheld computers for reading barcodes? etc etc. There are many different places you can go when discussing barcoding.
That's why I thought if you narrowed it down to what they are looking to do , that it would help.