title: Do the Amazon web service APIs support barcode/UPC queries?
body: <p>I skimmed through their documentation and found it a bit overwhelming at first. I know you can search for items by entering a UPC (the number below a 1D barcode), but I couldn't find a word about it in the API.</p>
  
  <p>What I want to do is perform a product lookup by doing a UPC search after scanning a barcode.</p>