For anyone who needs to be reminded:
• Keep bar codes straight or rotate them 90°. Don’t be clever.
• Keep bar codes black on white background, or at least use as much contrast as possible.
• You can crop the bars vertically a little bit. You can’t dramatically reduce them in size, and it’s a bad idea to crop them so the vertical bars are barely 1/4″ tall….
I’ve seen several lately that probably wouldn’t scan due to some genius designer running amuck.