The problem with California’s “Peeping Tom” laws is that they aren’t written as clearly as they should be. There is a great deal of room for interpretation which makes the case difficult for both sides to prove.
Peeping Tom laws are covered in California Penal Code Section 647(i) PC. The code states that a peeping Tom is anyone who;
(i) Who, while loitering, prowling, or wandering upon the private property of another, at any time, peeks in the door or window of any inhabited building or structure, without visible or lawful business with the owner or occupant.
(j) (1) A person who looks through a hole or opening, into, or otherwise views, by means of any instrumentality, including, but not limited to, a periscope, telescope, binoculars, camera, motion picture camera, camcorder, m...