Attribute barcode and model number field

Hi,

I am looking for an addon to add a barcode field to each product and also to add model number and barcode fields to attributes of a product. For instance a shoe may come in sizes 5, 6, 7, 8, 9. This is displayed as one product on the website with a size attribute. However each of these sizes has a different barcode and model number. Does this addon exist?

No. There's a product barcode field mod in the Free Software Add Ons (I haven't used it), but no one has written a mod to add model numbers or barcodes to attributes.

Just found this http://www.zen-cart.com/forum/showthread.php?t=176458 . Does anyone have experience of the Numinix product field and barcode modules? Do they do what i had previously asked?