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7 days agoCameras generally have barely noticeable, but uniquely identifiable, defects that will consistently affect pictures. So if you post a photo on your personal Social Media, and then you post a photo from the same camera on Hexbear, those two things could be connected. Just because it can happen doesn’t mean it’s practical, though.
I have no idea if this is what’s been used with the Harry Potter thing.
The worst thing about that printer tracking is that we only learned about it around 20 years after they started implementing it. It’s been another 20 years, imagine what they’re doing now.