This extension encapsulates the barcodephp (http://www.barcodephp.com/) library into a widget.
Have you include this extension to the Extension library?
If not, please do so and write some wiki about how to use it.
Thank you very much, is exactly what i was looking for. Thumbs up and +1 vote for you buddy!
I’ll write my feedback 
edit:
Why the public variables are not self-describing?
$o = type?
$t = thickness?
I think that should be changed… Nevertheless, is up to you
Cheers