MIT, in collaboration with Microsoft, has created a new touch interface, DuoSkin, that allows temporary tattoos to interact with smartphones or computers, with screen output based on changes in body temperature. 
The temporary tattoo even allows data transmission using NFC.
Cindy Hsin-Liu Kao, a doctoral student at MIT, says tattoos are not only trendy, but they're also a fairly inexpensive way "to change your appearance whenever you want." The DuoSkin team wanted to achieve the same by offering an affordable technology with an attractive trend.
DuoSkin tattoos are available in one of three different categories:
An input class that turns your skin into a trackpad.
An output class that can change color based on skin temperature.
and a communication device that allows you to get data from the tattoo.
Each form uses gold foil to create a durable and aesthetically pleasing temporary tattoo. From there, the researchers create a circuit using graphics software. Each tattoo can also contain an NFC chip, a thermochromic layer, or even LED lights.
Kao says that DuoSkin provides a variety of connectivity options for even the most “clumsy” pieces of technology – like a smartwatch.
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