from the open-your-shirt-and-say-aaaaah dept.
An anonymous reader writes "Researchers at Northeastern University have modified an iPhone to take readings from a special fluorescing nanoparticle tattoo ink, which can then measure sodium and glucose levels in the blood."
Humanity has the stars in its future, and that future is too important to be
lost under the burden of juvenile folly and ignorant superstition.
- Isaac Asimov