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2D Code Technical Overview: DataMatrix, QR Code, and PDF417

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This document provides a technical overview of various 2D code types, focusing on the structure, size, and data capacity of DataMatrix (ECC200), QR Code, and PDF417, including their rectangular extensions and error correction methods. It details specifications such as module sizes, block divisions, and the evolution from older ECC versions to the standardized ECC200, which uses Reed-Solomon error correction.

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