Drones are being trialled by some retailers, especially e-commerce companies, for product delivery purposes. Amazon has found in trials that drones can effectively deliver packages weighing 500g or less. Drones make navigating to customer locations easier and improve last-mile fulfilment efficiency. Retailers are also considering drones to potentially reduce costs and increase reliability of delivery. Additional benefits of drone use include enhancing retail security, aiding site selection and security planning, providing consumer insights, and improving energy efficiency and inventory management.