Generates a png image of a data matrix 2D barcode. The data is fixed to 304 characters length to demonstrate an issue in the underlying generator gems.
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Checkout and run rake generate:png
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Open online-barcode-reader.inliteresearch.com/default.aspx in a browser
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Decode image generated to tmp/barcode.png
The data string has a length of 304 characters, but the data decoded from the data matrix consists of an additional trailing space, which makes 305 characters in total.