IGCSE Computer Science Practice Test 2025 – Complete Exam Preparation

A QR code can store significantly more data than a traditional barcode due to its two-dimensional structure. While traditional barcodes are limited to horizontal lines and can typically hold only a small number of character data through a one-dimensional format, QR codes utilize both horizontal and vertical patterns. This allows QR codes to encode alphanumeric characters, binary data, and other types of information in a compact space. As a result, QR codes are commonly used for applications that require more extensive data storage, such as URLs, contact information, or event tickets.

Other options may present facts about QR codes and barcodes, but they do not accurately capture the key distinction regarding data capacity. A barcode's one-dimensionality typically limits its information storage capabilities, reinforcing why the ability of QR codes to hold more data is the defining characteristic that sets them apart.