From Google glass to embedded tokens, camera-based smart technologies will soon be on the market but the potential and pitfalls are not yet well understood. There are likely to be many implications of living in smartworlds – smart grids, smart infrastructure, smart homes – and as we start wearing sensors like cameras on us: smart people. Everyday products such as automatic flush toilets and taps are already starting to use more sophisticated camera-based computer-vision technologies. While wearable and embedded sensors can give us many benefits, there is the potential for them to become mechanisms of control by smart infrastructure monitoring these sensor-wearing individuals.