Walmart has written to suppliers of leafy greens to use blockchain technology to implement real-time, end-to-end product traceability. Reducing cost and time to trace food
The retail giant applied to the US Patent & Trademark Office for a system by which autonomous flying drones can communicate with one another and exchange packages.
Frank Yiannas, VP food safety at Walmart, set a challenge for his staff. He gave them a pack of mangoes and told them to find