MIT Media Lab engineers at the Massachusetts Institute of Technology, together with Microsoft Research, created DuoSkin printable tattoos that turn the user’s skin into an interface. The innovation has already been tested for performance and he found three ways to use it. The first version of DuoSkin can be used as a touchpad, button or slider to control mobile devices and a computer. The second version is able to respond to human body temperature, as well as display its emotional state. And finally, the third type is capable of storing small amounts of data read by any device equipped with an NFC chip. One of the leading specialists of the DuoSkin research team Cindy Sin-Liu Kao said that these tattoos are actually very easy to make, but their cost will not be small – gold leaf is required to make smart tattoos. You can use any graphic software to create the tattoo scheme itself and apply it on a layer of gold leaf to ensure conductivity. The tattoo is temporary and keeps on the skin for about a week. Now the team continues its scientific research and is already experimenting with LEDs to create luminous jewelry applied directly to human skin.