Nikon had something similar for the D2X in 2006. I assume there are newer versions for newer cameras, but I didn't look further. http://imaging.nikon.com/lineu

Nikon had something similar for the D2X in 2006. I assume there are newer versions for newer cameras, but I didn't look further. http://imaging.nikon.com/lineup/software/img_auth/index.htm http://imaging.nikon.com/lineup/software/img_auth/index.htm sadly the spec does not say how it works. Broken: http://www.photographybay.com/2011/04/29/nikon-image-authentication-software-cracked-rendered-useless/ http://www.photographybay.com/2011/04/29/nikon-image-authent...