Police Can Trace Cameras Thanks to Sensor Imperfection ‘Fingerprints’ It’s another tool to help law enforcement fight child exploitation. via PetaPixel: https://petapixel.com/2022/07/01/police-can-trace-cameras-thanks-to-sensor-imperfection-fingerprints/ “Every camera has some imperfections in its embedded sensors, which manifest themselves as image noise in all frames but are invisible to the naked eye.”