The filing details a “Registration” mode on cameras that would take a snapshot of your iris and use that unique information as a watermark. The photographer would select this mode, look into the viewfinder for a moment so that the camera can scan his eye, and then take photos as usual. Up to five users would be supported.
The system would embed the metadata in batches to avoid slowing down the camera. It could also be modified to set up a verification code instead of a watermark, keeping the image quality intact.
It sounds like professional photographers could benefit from a system like this, but for the average Joe it probably wouldn’t do much good.