A rectangular image consisting of black lines and white spaces representing data which can be optically read is called?

The rectangular image that consists of black lines and white spaces representing data that can be optically read is called a barcode. Barcodes are widely used in various industries and businesses to automate the process of identifying and tracking products, inventory, and other data. The black lines and white spaces in a barcode represent a specific code or information that can be read by a barcode scanner or reader. When the scanner reads the barcode, it translates the code into a digital signal that can be processed by a computer or other devices. This makes barcodes a simple and efficient way to store and retrieve information.