I have a client that wants a site where he will be selling 1500+ products. He will be getting a scanner that will save all of the bar codes for his inventory.

I am looking for a shopping cart that will work based on bar codes. so that I do not need to find images an info for each product. Is there a shopping cart like this? This will also need to be hooked up with paypal.

Also this will need to be implemented into a current design.

Any help would be appreciated.