You are not paranoid - you are really being watched!
I've already written about cameras inside self-tapping screws
in toilets and public places. Interesting news came from the
USA today. A team of engineers from Princeton and
Washington Universities has invented (
https://bit.ly/3lpZ5JB)
a micro-camera that is about the size of a grain of salt, yet
capable of producing crisp, full-color images at level by standart
digital camera. Similar microcameras with the same dimensions
have been made before, but they all photographed much worse.
The novelty features advanced signal processing algorithms
that create an image. The new camera will come in handy in
various fields, including medicine, robotics, espionage. For
example, it can be used to examine the internal organs of a
patient during endoscopy.