Scanning ON SCREEN barcodes

[Roger.E.Eller at sealedair.com]

For obvious reasons, the laser beam of a barcode scanner cannot read a 
barcode that is displayed on your monitor. However, if the resolution of 
the display is high enough to detect the differences in line-thickness of 
each bar... Is it possible for Revolution to take a snapshot of a 1 pixel 
height strip across the displayed barcode and show in a field what the 
alpha-numeric values are? What I want to build is a "digital" barcode 
verifier to simply confirm that the content of the code is correct BEFORE 
printing it.

I think I can handle the snapshot of the strip of pixels, but I have no 
idea how to begin analyzing the on/off pixels to determine their value. 
Can anyone offer suggestions? Have you attempted anything similar and have 
code snippets that you would share?

Thanks.
Roger Eller <roger.e.eller at sealedair.com>