I believe that QR codes will be in the very near future "new technology" for Real Estate. I use them often and am able to get vital info from (of all things) For sale signs in the front of a home. Picture this, you're driving by a home for sale that you didn't know was out there, it's got a QR code, you scan it, you then have everything on your smart phone, or iphone, and are able to see: vurtual tour, disclosures, showing instructions, vacant, or not, days on the market, listing price......well you get the picture....or code.
We are so close to silicon valley that we HAVE to be up on the latest technology. Whether or not it's a fad, I don't know, but for now, in real estate, it's a very good thing.
Just a note, when I started using the QR codes and didn't know much about it, I too was frustrated. Many of the QR codes were not set up correctly, It's better now, and I love it.