2d barcodes

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There are various types of 2D barcodes, this page is used to list pros and cons of each and how they can be used to encode microformats and picoformats

  • a 2D barcode can be used to encode the URL of a hCard 1.0 on a business card or letterhead
  • a 2D barcode can be used to encode small amounts of machine-readable information, even in places without internet access -- perhaps warchalking-like Geo information on how to find nearby internet access points?
  • ... ?

Further reading