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 ...

(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 ...

Add Yahoo as a preferred source to see more of our stories on Google. The first modern barcode was scanned 50 years ago this summer – on a 10-pack of chewing gum in a grocery store in Troy, Ohio.

The first modern barcode was scanned 50 years ago this summer—on a 10-pack of chewing gum in a grocery store in Troy, Ohio. Fifty is ancient for most technologies, but barcodes are still going strong.

The first modern barcode was scanned 50 years ago this summer – on a 10-pack of chewing gum in a grocery store in Troy, Ohio. Fifty is ancient for most technologies, but barcodes are still going ...