Your phone's camera has a unique ID you never knew about


This is what the camera fingerprint of one of our Galaxy S6 units looks like. It may not look like much to the human eye, but specialized image analysis software like CamFinger is capable of interpreting the noisy image and connect it to a particular device
Basically, the camera sensor in your device is far from perfect. Every time you take a photo, the distinct imperfections of the sensor leave their mark on the image, and can potentially be used to identify your device. Due to production tolerances, some areas of the sensor will interpret the incoming light in slightly different ways, which results in some pixels appearing brighter, while others appearing darker. The final result will, in turn, always be a little bit too bright or too dark on these exact pixels, portrayed content and lighting notwithstanding.
Using CamFinger, a dozen images can be stacked on top of each other and filtered down to what looks like a random image of visual snow, which is actually the unique pattern of dark and bright dots intrinsic to the camera sensor in your device. Much like fingerprints, the sensor's ID remains the same for the entirety of its lifetime and can be used to identify it, hence the moniker “camera fingerprint.”
If you want to find out the unique ID of your phone's camera and learn more about the whole process, you can download CamFinger and give it a try for yourself. All data collected by the app is anonymous and once you get your “camera fingerprint,” you can compare it to those of other anonymous contributors to the project.
Download CamFinger:
source: CamFinger
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