Instead of the dye used for tribal arm bands and Chinese characters, these tattoos will contain nanosensors that read the wearerâ€™s blood levels of sodium, glucose and even alcohol with the help of an iPhone 4 camera.
Dr. Heather Clark, associate professor of pharmaceutical sciences at Northeastern University, is leading the research on the subdermal sensors. She said she was reminded of the benefits of real-time, wearable health monitoring when she entered a marathon in Vermont: If they become mass-produced and affordable for the consumer market, wireless devices worn on the body could tell you exactly what medication you need whenever you need it.
â€œI had no idea how much to drink, or when,â€ said Clark, reflecting on her marathon run. â€œOr if I should have Gatorade instead.â€
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