Two-Dimensional Code

A two-dimensional code is a general term for codes that store data in both horizontal and vertical directions. While one-dimensional barcodes hold data only horizontally, two-dimensional codes use the entire surface area, allowing more information to be stored in a small space.

QR codes are one type of two-dimensional code standard, and others include Data Matrix, PDF417, and Aztec Code. Each has different characteristics and use cases, such as Data Matrix for small component marking.