Two-dimensional code

A 2d code does not consist of bars but rather a grid of square cells allowing more information to be encoded in a smaller amount of space. These are also referred to as "stacked" or "matrix" codes.

Data Matrix

QR code

RSS-14 (Stacked code)

Aztec

MaxiCode

PDF417

• What is a 1d code?
• What are the main advantages of Data Matrix?
• Comparison between Data Matrix and barcode