Kanban (Japanese: card or sign) refers to a supply method based on the pull principle. The replenishment is thus based on the actual consumption of materials at the point of consumption. The various Kanban control mechanisms ensure an efficient flow of materials and the lowest possible stock in the system. In particular, articles with relatively constant consumption and a low consumption value are suitable. Often, Kanban is used in combination with milk runs (e.g., via route trains) and supermarkets. Kanban contributes to increased efficiency by reducing waiting times, material inventories and lead times.