tech article 3/3/11

A new type of wearable stress sensor, which constantly checks for signs of anxiety, could give you a precise answer. It looks like a large digital watch with no readout. A button on its surface lights up in different colors to convey the level of battery charge. Two small silver electrodes on the underside of the device continually send out a low electric current to measure skin conductance. Skin conductance rises along with physiological levels of stress, including both excitement and fear.