Scientists have developed a means to 3D print electronics onto the skin as a form of wearable technology akin to a tattoo. It is proposed that further development of this technology will allow these tattoos to monitor our vitals, and feed us personalized health advice in real time. They’ll wire our biology to the web, and put the internet of things at — on, in — our fingertips. They’ll enhance our five senses, and perhaps even give us new ones. This technology has benefits to the future soldier and represent a moral and ethical grey area.