There are some threads in the archives which describe using Barcode fonts. I'm sure if you search in the archives for "barcode" you'd come up with something relevant to your needs.
From: Surov Maxim [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, October 08, 2002 10:34 AM
To: [EMAIL PROTECTED]
Is it possible to embed barcodes into PDF using FOP?
Thanks in advance,