"The time has come," the Walrus said,
   "To talk of many things:
    Of QR codes and profile pics
    Of Cox'es and their hackings"

http://hackaday.com/2012/04/13/qart-codes-the-better-way-to-...

https://lh3.googleusercontent.com/-DGzr5UFEIXM/AAAAAAAAAAI/A...