In April, Michael McAlpine, a mechanical engineering professor at the University of Minnesota, published a study in the journal Advanced Materials in which he demonstrated a way to print electronics directly onto the skin. The device — cheap, accessible, and compact — already offers groundbreaking applications for the military and medicine. In the future, it could completely change how we interact with the world around us.

E-tattoos that can control a smartphone

It’s the stuff of cyberpunk science fiction — tattoos adorned with flashing lights and sophisticated circuitry. They’ll monitor our vitals, we’re told, 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..

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