Originally posted by WendyB Go back and read the end of that thread.
It will shed quite a bit of light on the subject. The images in that thread came from a K100D.
If one wants the serial number and registered owner of the specific camera the images were taken with they can be located.
I'd be willing to believe you had you stopped with saying that fingerprinting had identified them as being from a K100D (or perhaps from any other camera using that same sensor).
And it's true that comparing noise patterns can be used to provide a fingerprint match between an image and the specific camera it came from -- although the technology is in its infancy.
But your last statement loses me. There's no way Pentax keeps a database of said fingerprint for every camera they make. Oh, I'm sure the FBI, CIA, and NSA would like them too, but it's just not something camera companies are in the business of doing at this point. If they were, we'd hear about it from privacy whistleblowers, not from some rumor forum post.
Plus, the research on this comes from Binghamton University, not MIT as you say in the other thread. Claiming something high-tech comes from MIT is a pretty typical "urban legend" fingerprint -- an attempt to lend credence.
The images could be a hoax, but to my judgment they seem more credible than your statements.
I note from your profile that you're a Pentax amateur photographer, and you've said elsewhere that you're a journalist. Charitably, your sources at Pentax fed you the above line and you took it at face value. They may indeed know that the images are from a K100D, but if so they know that in some other way.
Alternately, you're just makin' stuff up.