- #1
KingNothing
- 881
- 4
Does anyone know the workings behind those little scanners that department stores use...you know, the ones that they can take off and aim at the barcodes on heavy things?
I know the barcodes themselves with the thickness of the lines and stuff represent the number that usually appears right below them.
How do the scanners pick that up so well? Also, why when something won't scan, does it always work best to aim at the barcode and slowly draw your 'scanner' away from it?
I know the barcodes themselves with the thickness of the lines and stuff represent the number that usually appears right below them.
How do the scanners pick that up so well? Also, why when something won't scan, does it always work best to aim at the barcode and slowly draw your 'scanner' away from it?