This does not necessarily mean you are producing the best bar code possible. Scanners are designed to be very tolerant, to read as much as possible, even very poorly printed codes. So, even if your bar code were readable this would not prove anything. What you probably want to know is whether or not your bar codes will meet standards. The best way to determine whether your bar codes meet standards is through verification.
Verification ensures that the bar code meets industry guidelines.
This is done by using a verifier. Verifiers measure how the bar code stands up to these standards. Since reading equipment is designed to conform to these standards, verified bar code has the best chance of being read by the widest variety of light pens and scanners. It is difficult, if not impossible, to visually read bar code. We implore you to verify your work.