After reading the Foucault reading the first example I could think of that referred to the idea of invisible surveillance was a security system installed in one of my stores. The store I am referring to has a terrible high shrink. This means that the store loses a ton of money both internally and externally. After the last inventory the loss prevention team decided to put up a surveillance system. Four dome cameras where set up within the store including one in the back room.
Nobody knows where the camera is pointing at any given time.
Not even the store employees know where the camera is watching or even who is watching. The kicker of the whole thing is that there is no camera at all. The whole concept is to make the workers and the customers think there is a camera watching them. Since the installation of these cameras the shrink has gone down considerably. This represents to me the idea of invisible power.