Add Yahoo as a preferred source to see more of our stories on Google. (The Conversation) — Few objects in the world are more immediately recognizable than the barcode. After all, barcodes are all ...

Barcodes work based on light reflected back to scanner optics: black does not reflect light, while the white (blank) spaces do reflect light. Because characters (alphabetic, numeric, special) are ...

Editor’s note: The views expressed in this commentary are solely those of the writers. CNN is showcasing the work of The Conversation, a collaboration between journalists and academics to provide news ...

(The Conversation) — Few objects in the world are more immediately recognizable than the barcode. After all, barcodes are all around us — more than 6 billion are scanned every single day. They’re on ...