Is life really going to be easier when you can't use your toothbrush because it's lost its Internet connection? You've heard the hype: The Internet of Things will transform the way we live and work, bring us untold benefits like cutting our utility bills and warning us when the milk has gone sour, and be the engine for the next great economic boom. McKinsey claims , for example, that the IoT could have an impact of $11.1 trillion per year by 2025 - about 11% of the world economy, by McKinsey's estimate.