If you feel that the world has become a buzzing beehive of connectivity, wait a few years. A recent report from CISCO estimates that only a small fraction of the devices that could be talking to each other - 10 billion out of 1.5 trillion, or just 0.6 percent - are actually connected. CISCO estimates that the number will jump to 50 billion by 2020, potentially transforming the way we live and the global economy.