I don't know that this is true in the USA. Stealing this snippet from a lawyer's website about "can my neighbor point his security camera at my home":

> In some states, mere visual recording is not illegal so long as the camera is on your neighbor's property. In other states, visual recording is acceptable but any audio recording is not. And in other states, all forms of recording might face criminal or civil penalties. Generally, any publicly viewable areas like back yards are fair game, which is how companies like Google can record their Street View images across the United States.

>> Generally, any publicly viewable areas ... are fair game

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