Chinese e-commerce giant JD.com has launched an smart helmet for food couriers with features enabled by artificial intelligence technology, following similar roll-outs by rivals Alibaba Group Holding and Meituan as they seek to improve rider safety and boost delivery efficiency.The helmet integrates an AI-driven voice assistant with a camera that can “see” the surrounding environment, JD.com’s food delivery unit announced on Monday.The company said the device was designed to minimise...