Plain view rule – in some legal systems, the plain view rule details a provision which entitles a policeman to enter and search premises before obtaining a warrant, in extraordinary cases where needed for the safety of people, or for avoiding a crime. For example, to avoid a theft where they see the item to be stolen, and they see the thief trying to get it. Usually later the policeman asks for confirmation by the court of their actions. A synonym is “plain-touch rule”. An antonym is the phrase “plain sight rule”, which forbids the policeman to seize and use as proof any good or item without issued warrant by the court.