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Welcome to the Data Matrix
watercolor barcode
I made an experiment this weekend to see if I could paint a Data Matrix or Semacode pattern in watercolors and have it still be readable by a mobile phone camera.
A Data Matrix code is a two-dimensional matrix barcode consisting of black and white square modules arranged in either a square or rectangular pattern. The information to be encoded can be text or raw data. Usual data size is from a few bytes up to 2 kilobytes. The length of the encoded data depends on the symbol dimension used. Error correction codes are added to increase symbol strength: even if they are partially damaged, they can still be read. A Data Matrix symbol can store up to 2,335 alphanumeric characters.
I used Kaywa's data matrix generator to create the pattern for http://www.ozoux.com and then painted a series of dark and light colored patterns to reproduce the full symbol.
If you have one of those 2d barcode reader for your mobile phone, you should be able to scan the painting and get transported to the website.
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