Walmart files patent applications for drone shopping assistants and smart shopping carts — The Verge — “One of the patents is clearly for the in-store experience, and proposes a sensing device to make shopping carts smart and communicate with a mobile device… There’s also a patent that tracks users through wearables, and several for managing/sensing inventory levels. Walmart has also filed a patent for drones that would assist customers shopping in-store… There are also two patents for autonomous tech. One outlines a method for detecting items placed in a container.”