Yes, it is possible and it has been done. Here is a paper that talks about it: http://isis.poly.edu/~forensics/pubs/investigation08.pdf http://isis.poly.edu/~fo

Yes, it is possible and it has been done. Here is a paper that talks about it: http://isis.poly.edu/~forensics/pubs/investigation08.pdf http://isis.poly.edu/~forensics/pubs/investigation08.pdf I did a summary presentation of the topic and paper. PPT: http://dl.dropbox.com/u/716143/digicam-fingerprint.ppt http://dl.dropbox.com/u/716143/digicam-fingerprint.ppt PPTX: http://dl.dropbox.com/u/716143/digicam-fingerprint.pptx http://dl.dropbox.com/u/716143/digicam-fingerprint.pptx EDIT: The paper I linked above details source identification by recognizing patterns in demosaicing artifacts. In that paper the authors combined the demosaicing fingerprinting with their earlier noise fingerprinting work: http://isis.poly.edu/~forensics/pubs/icme2007.pdf http://isis.poly.edu/~forensics/pubs/icme2007.pdf