Barcodes are everywhere, from grocery store shelves to online shopping, and they are essential in the modern world of inventory management, product identification, and data tracking. But how exactly ...

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 ...

Once upon a time, a restless cashier would eye each and every item you, the consumer, purchased and key it into the register. This took skill but also time—and proved to be an imperfect way to keep ...