If
you’ve ever waited in line while a cashier tried repeatedly to scan
a bar code you’ll know the importance of bar code legibility. Now
take that situation and apply it to a medical or pharmaceutical
setting. The consequences of a misread code could be devastating.
That’s why we have code verification.
I
find a lot of confusion with regard to checking bar codes. Many
engineers seem to think it’s enough to check that a just-marked or
applied code can be read. That’s what Microscan in their excellent
white paper, “Understanding Machine Vision Verification of 1D and
2D Barcodes” call “validation” or “process control”.
That
may be sufficient if you’re in an environment where compliance with
bar code standards is not required, but in many industries it’s
essential that you demonstrate an ability to meet the standards for
legibility. That’s called “verification” and the Microscan
paper will tell you how to do it. Here’s a link to the White papers
section of their website:
http://www.microscan.com/en-us/trainingandresources/machinevision.aspx#wp
While
there, I suggest you look over their other papers. They have a lot of
excellent training material, and it’s all free. You could even read
it on your phone while standing in line at the checkout!
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