Warehousing systems are often associated with huge distribution centers full of tall shelves where stacker cranes work at lightning speed. Not to be forgotten are the countless small to medium-sized systems that are indispensable to many businesses in a wide range of areas including procurement, production, and distribution. In this environment, fully automatic warehouse operations are often not feasible from an economic or technical perspective. Instead, products are added and removed from inventory manually. In any case, operating personnel want maximum efficiency in their warehouse management, stocktaking, and inventory processes.