PRNU: How to Identify Your Smartphone from a Single Photo

Let’s talk about forensics, cameras, and how point & shoot cameras may actually protect your privacy a bit better than smartphone camera apps. Does that sound weird? It is – and we’re just getting started.

First, the forensics: it’s a process called PRNU, or photo-response non-uniformity. Basically, when you look at a photo, even a digital photo that’s never seen a print-out, there are tiny flaws all over it. Those flaws are created by many factors, but a number of them involve the software and hardware of the camera used to take the pictures.

You can probably see where this is going. Like identifying a fingerprint or a fired bullet, forensic sp…
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