A tattoo in ink is all looks but now you can get a tattoo that not only looks good but also acts as a sensor that might save your life by providing life-saving health data. University of Tokyo’s Department of Electrical Engineering and Information Systems is working on a super-stretchy wearable that feels like a second skin and can record data.
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http://www.nature.com/nnano/journal/vaop/ncurrent/full/nnano.2017.125.html?foxtrotcallback=true
Here is something MIT and Microsoft is working on as well
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