Instead, this project is aiming to develop "smart" tattoo ink that can help monitor what's going on inside your body. The thought is that tattoo ink can get closer to the action than wearables, which remain outside the body. The video gives several examples of how ink color may change with varying levels of sodium, glucose, or acidity (i.e., pH). So, tattoo ink may not always be able to tell you what you are really interested in such as sodium or glucose levels in the blood. Researchers will need to determine what else may accidentally make the ink change color.

Source: Forbes October 03, 2017 01:49 UTC