Definitely. The first and only time I tried to scan a QR code I took a picture of it on my iPhone, realized a few seconds later that I had to install an app for it, then walked away shocked that anyone actually uses them.
1) Open camera from lock screen
2) Take photo
3) If QR code is detected, offer to open it.
4) Later when browsing photos, remember it's a QR code, offer the link again, so that we can come back to it later.
5) If no QR code is detected, treat it as a normal photo.
