Here are a couple that looks good, no installation needed.
On 01-Mar-2012 5:34 AM, jimpickerell wrote:
One of the problems with putting metadata in the IPTC header is that it can easily be edited out. On the other hand, I have been told that the camera identifier cannot be edited out of the Exif file. Can anyone confirm if that is true?
If that is true, it should be possible to include the camera serial number as non-editable in Exif as well. I assume that when GPS data is stored with an image it cannot be edited, otherwise it would be worthless. Is that the case?
If the camera serial number and date taken could not be removed or edited from a file then a photographer could register a particular camera with the copyright office. Anything taken with that camera after the registration date would be his creation. If the photographer sells the camera then the new owner could register the same serial number with a new beginning date.
Obviously, this could greatly simplify the whole copyright registration process and still provide a firm identification of the copyright holder from a legal point of view. It would require legislation, but might be something worth pursuing if it is technically possible.