“Obvious surveillance cameras have a deterrent value...”
I’ve seen fake security cameras for sale that look like the real deal. You can put up a few fakes to be noticeable and hide the real ones.
My bother put up security cameras and several times noticed dodgy door to door solicitor types get a hitch in their step or turn back when they saw a camera on them; and in another instance, he recorded the burglary of the house next door.
Yes. It's exceptionally amusing when you can get a video with the real one, showing a burglar destroying or disabling the fake one, and then trying to break in ...