Getting inked could save your life.

Scientists from Microsoft and The Draper Laboratory are developing medical tattoos that would stop hackers from messing with pacemakers and drastically reduce the number of needle sticks needed to monitor glucose levels.

Medical tattoos could also be adapted to monitor any number of other medically important molecules.

"We can follow the same trends as a finger stick glucometer," said Heather Clark, a scientist at the Draper Laboratory near Boston and a co-author of a recent article in the journal Analytical Chemistry that describes her team's glucose monitoring tattoo.

Clark's medical tattoo isn't a true tattoo. A typical tattoo involves repeatedly sticking a patient with a solid needle that penetrates deep into the skin to permanently stain the tissue with dark colors. Clark's prototype medical tattoo, on the other hand, would use a single stick from a hollow needle to stain the first few layers of skin yellowish orange for about a week.

The yellow-orange dye contains tiny nanosensors, little balls about 100 nanometers across. Glucose is drawn into the heart of the sensors, where it changes the color of a tiny pigment molecule. As the amount of glucose rises, the color of the tattoo would become lighter. As glucose levels fall, the tattoo would get darker.

Source: Discovery

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