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@ -38,6 +38,7 @@ Keep in mind the limitations of Metadata Cleaner: "mat2 only removes metadata fr
# Photo and Video Forensics
Even though it is possible to clean all metadata from an image or video, forensic examination may nonetheless determine which device was used to capture it. As the Whonix [docs](https://www.whonix.org/wiki/Surfing_Posting_Blogging#Photographs) note:
> Every camera's sensor has a unique noise signature because of subtle hardware differences. The sensor noise is detectable in the pixels of every image and video shot with the camera and could be fingerprinted. In the same way ballistics forensics can trace a bullet to the barrel it came from, the same can be accomplished with adversarial digital forensics for all images and videos. Note this effect is different from file metadata.
Multiple photos or videos from the same camera can be tied together in this way, and if the camera is recovered it can be confirmed to be where the files came from. Cheap cameras can be acquired from a refurbished store and used only once for images or videos that require high security.