Blockchain drone technology continues to grow, particularly with commercial development by major brands like Amazon and Walmart.
Walmart has reasserted its interest in blockchain-backed drones with a recent patent application.
Walmart's patent efforts have showcased how the retail giant is investigating blockchain, this time it's a project that sees a way for drones to talk.
A team of Russian engineers and entrepreneurs wants to link heavy-duty delivery drones using blockchain.
Walmart is seeking a patent for a "smart package" that would use blockchain technology to track physical goods through their shipping journey.