A will call system for automating the management of storage and retrieval of items, preferably medical prescriptions. The automated system provides informational control of all items in the system. The automated will call monitors the length of time an item remains in the system, and into which location an item is placed. An article sensor provides absolute confirmation that an item has been placed or removed from a designated location in the storage unites. The automated will call system uses a controller to permit users to monitor and optimize the storage and retrieval procedures.