How to encode using Code 39 barcode

The easiest way to encode using 3of9 is to put an asterisk (*) on both sides of the barcode string, and print/display it using a 3of9 font. There is a free one on a french site (in a search, you have to skip past all of the sales gimmick sites).

If the content that you wish to encode is other than UPPER CASE letters and numbers, you may need to encode the characters using a "shift" character.

Roy