Scopophilia (or voyeurism)

The obtaining of sexual, voyeuristic pleasure by looking at nude bodies or watching people perform some kind of sexual activity without interacting directly with the observed subject (or the desire to obtain sexual pleasure in this way). It may be associated with exhibitionism. It is a crime if it is done without the consent of everyone involved, including those being observed, because it is otherwise an infringement of their right to privacy. This practice has been widely discussed in painting and film.