Developed by a San Francisco based start-up of the same name, ware combines its own skydio 2 Quad rotor aircraft, which charge batteries while perching on the & quot; nest & quot; in the warehouse. < / P > < p > according to a pre-set schedule, they take off regularly, fly along stacks of pallets – either back and forth, or up and down – before returning to their nests. < / P > < p > as each UAV flies, its on-board camera will record a sticker image similar to a QR code on each shelf, as well as the barcode of each pallet on the shelf. The sticker code and barcode are unique codes for each shelf and pallet respectively. < / P > < p > therefore, when the video is processed by the cloud server, ware can show users which pallets are on which shelves – and where these shelves are in the warehouse. In addition, since the system knows the contents of each pallet, it can track the current number of any specific product in the building. < / P > < p > in contrast, Fraunhofer’s and MIT’s systems are not visual based. Instead, they use drones to read RFID tags. Global Tech