Temporary tattoos act as "on-skin user interfaces"

https://vimeo.com/178334883

MIT and Microsoft researchers demonstrated a system of gold leaf temporary tattoos for "on-skin user interfaces" including a touch sensor, near field communication antennae, and a low-res thermochromic display that changes color. From the research description:

DuoSkin draws from the aesthetics found in metallic jewelry-like temporary tattoos to createon-skin devices which resemble jewelry. DuoSkin devices enable users tocontrol their mobile devices, display information, and store information ontheir skin while serving as a statement of personal style. We believe that in thefuture, on-skin electronics will no longer be black-boxed and mystified; instead,they will converge towards the user friendliness, extensibility, andaesthetics of body decorations, forming a DuoSkin integrated to the extent thatit has seemingly disappeared.