Matrix barcodes, also known as 2D barcodes, are a type of code that can store information in both horizontal and vertical directions. Unlike traditional 1D barcodes, which only hold data in a single line, matrix barcodes can contain much more information, such as URLs, text, or contact details. They are often used in applications like product labeling, ticketing, and mobile payments. One common type of matrix barcode is the QR code, which can be scanned using smartphones and other devices equipped with cameras. These codes are increasingly popular due to their ability to link users directly to websites or apps, making them a convenient tool for marketing and information sharing.