Nov 30, 2015 / Written by Matt Adams
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A barcode is a visual pattern that uses a combination of alternating black and white bars of various widths and sizes (commonly called ?elements?) to represent specific strings of text. Changing the sequence of elements translates the pattern into different strings of text, and vice versa. A barcode scanner can then read this pattern and convert it into plain text that can be displayed on a screen and read by humans as normal.