Half a croissant, on a plate, with a sign in front of it saying '50c'
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LCD Infrared bar code film

Place film between LCD screen and infrared bar code reader
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Make a standard grocery store IR bar code reader work with a bar code on a LCD display. A film that could be put in between the scanner and the LCD display that would modify the laser's diffusion enough to make the technologies usable together.
clamwich, Oct 16 2009

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       Could you provide a few more clues? Why is it currently not possible to hold a LCD-generated barcode up to the scanner? Is the pixelation a problem?
loonquawl, Oct 16 2009
  

       I'm calling shenanigans. An infrared barcode reader?   

       There's nothing stopping a standard (laser-based) barcode reader from reading a barcode on a display.
phoenix, Oct 16 2009
  

       yahbut why ? if you've an LCD screen showing a barcode, then you have an electronic instrument that can be directly plugged in to the reader side.
FlyingToaster, Oct 16 2009
  

       (you might be testing either barcode generating software or a barcode reader)
phoenix, Oct 16 2009
  
      
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