I've been watching Scan.me for some time now. I saw Garrett Gee at a Utah Launchup event in Provo a while back and was very impressed with his startup enthusiasm and his ability to make things happen. I've also been vaguely acquainted with Kirk Ouimet.
I just created my own QR code (links to my portfolio site):
Yes, I'm shamelessly entering the current Scan contest right now.