What does your tattoo say about you? Wired writes:
In its ongoing quest to measure every aspect of U.S. troops’ physiology, the Pentagon’s esoteric research enclave DARPA wants to develop a durable, unobtrusive device that can track the body’s physical response to stress. Military scientists believe that using the device — preferably a tattoo — to track heart-rate, temperature or bio-electric response during various training situations will help them crack the code of combat fatigue.
Advanced materials make it possible to integrate everything from the sensors to the transmitter into thumb-sized membranes that can stick to skin — like temporary tattoos. These tiny arrays combine the necessary sensor — be it EKG, heart rate, or temperature — with a short-wave antenna and transmitting capability.
Isolating the factors that make these stress levels spike is part of a larger initiative to understand and control the different triggers of the body’s physiological responses.