Well what the heck are they? There has been a lot of chatter lately about this technology. My buddy Jason Sandquist has written an excellent post about what they are and how to use them for commercial real estate. With his permission please click on the link: http://www.crepodca.st/insight/qr-codes-commercial-real-estate/ . In the meantime check out how a simple application is used in residential real estate. Thanks to my friend Lesley Lambert for permission to use the video. Are there any other examples out there from either residential or commercial? I would love to see some more.