Michael S Hart's grave marker has a QR code on the back

Inventor of the e-book, founder of Project Gutenberg, very dear friend, still digital from beyond. :)

 

For one more thing that my fiancee Nadja Robot and I did for Michael, please dig this link:

 

www.flickr.com/photos/benchilada/7418875312/

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Taken on May 23, 2012