Printing Keys and using OCR.

Robert J. Hansen rjh at
Tue May 15 10:42:12 CEST 2007

> Know of a system that can take binary data and output an image to be
> printed out, that is then capable of extracting that binary data from
> an imperfect scan of the image.

QR coding is pretty nice.  3kb of binary storage per bitmap, and it's  
an international standard: ISO/IEC 18004.  There may be an open- 
source implementation of it already.  If there's not, you could do  
the community a favor by writing one.  :)

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