Many of us have bumps and other marks on our skin. Wouldn’t it be nice if you could use them as the location for touch sensitive buttons? SkinMarks are all about this idea. They consist of electronic rub-on tattoos that conform to your wrinkles and let you interact with your smartphone and other devices. Illuminating tattoos were also developed.
The researchers used an Arduino Nano and Adafruit MPR121 to pull this off. SkinMarks are super thin and don’t get in your way. You can find out more on Saarland University’s website.