Rise of the machines: who is the 'internet of things' good for?

In San Francisco, a young engineer hopes to "optimise" his life through sensors that track his heart rate, respiration and sleep cycle. In Copenhagen, a bus running two minutes behind schedule transmits its location and passenger count to the municipal traffic signal network, which extends the time of the green light at each of the next three intersections long enough for its driver to make up some time. In Davao City in the Philippines, an unsecured webcam overlooks the storeroom of a fast food stand, allowing anyone to peer in on all its comings and goings. What links these wildly different circumstances is a vision of connected devices now being sold to us as the "internet of things". The technologist Mike Kuniavsky, a pioneer of this idea, characterises it as a state of being in which "computation and data communication [are] embedded in, and distributed through, our entire environment".