A tart card is a card which advertises the services of a prostitute. The cards are found in many countries, usually in capital cities or red-light districts. Originating in the 1960s, the cards are placed in locations such as newsagents' windows or telephone boxes. Alternatively they are handed out or dropped in the street. Legal action is sometimes taken against their use. Illustrated tart cards from the 1980s and 1990s have come to be regarded as examples of sub-cultural accidental art.