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."
You know, Callahan's is a peaceable bar, but if you ask that dog what his
favorite formatter is, and he says "roff! roff!", well, I'll just have to...