What is actionable intrusion? It generally involves some action that would be offensive to a reasonable person, and in some area that is considered private. For example, in disputes involving insurance it is not illegal for a defendant to watch and follow the plaintiff as long as it is in a public place. Taking it one step further, a court held that it was not an invasion of privacy for a wife to place a tracking device on her husbands car. It may, however, be an issue if it was the police that did it as it could be a violation of the persons constitutional rights.