Error Correction (QR Code) |
The QR Code symbology supports four levels of error correction, with L being the least thorough and H being the most. These levels are defined in terms of percentage of codewords in the barcode that can be corrected if damaged. The levels are:
Level L. Approximately 7% of codewords can be restored.
Level M. Approximately 15% of codewords can be restored.
Level Q. Approximately 25% of codewords can be restored.
Level H. Approximately 30% of codewords can be restored.
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