Estimates of the future market size of the IoT cover a broad range, but most pundits agree it will dwarf any other market. In mature markets today, the ultimate, pervasive consumer device is a mobile phone. Consider your own household, and count the number of mobile phones you currently have. Then count the number of windows, doors, electrical outlets, lights, appliances and heating and AC units you have. You’ll quickly see why the IoT market will surpass the mobile phone market, at least in the western world.