A 2D barcode is generally in the form of a square and can hold more data than the traditional 1D barcode. Data is encoded based on both the vertical and horizontal arrangement of the pattern and therefore is read in two dimensions. A single 2D barcode can hold a significant amount of information and may remain legible even when printed at a small size or etched into a product.
A 2D barcode can contain images, website addresses, voice and other types of binary data.
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