We have developed a application to simplify and improve refilling workflow. To prevent pickers running out of a title, the refilling system predicts titles in need of refilling and present them in a prioritised list on a handheld device. Scanning a title barcode will register that refilling has started, scanning the location barcode registers the refilling as completed. In conjunction with automatic refill requests, the pickers may file manual requests from the zone control panel. These requests are prioritised over the automatic ones, and displayed in red on the handheld device.