Today's supply chains form the arteries and veins that keep global trade alive, connecting a largely borderless, always-on world economy. New innovations offer disruptive possibilities for the future of global trade. It's easy to hypothesize that Star Trek-style teleportation, drones, 3-D printing, and space logistics, will change trading. But the biggest shift to the supply chain will see it digitally connected and becoming part of the Internet of Things.