Bar Codes in the Darnedest Places!

QR on Head

When I was a child, we played with chalk.  We signed our names, we sketched daisies and diamonds and puppy dogs.  Left to our own devices on carefree summer days, we personalized our world.  Like the raucous undergrads who sneaked out and painted The Rock on Washtenaw Avenue, near the University of Michigan campus, we altered our environment simply to show that We. Were. There.But in 2012, sidewalk chalk has been trumped by a new, technological signature:  the QR code.  QR codes are similar t … [Read more...]


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