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Many medical sensors, like the sort used for heart-monitoring electrocardiograms (ECGs) or brain-monitoring electroencephalograms (EEGs), require direct skin contact and a sticky layer of gel to help conduct electrical signals. Both technologies can be remarkably precise, but they don't transfer easily from hospital to home. Now researchers at the University of California, San Diego believe they may have solved the sticky situation with a sensor that can read ECG and other data through clothing, without ever touching the skin.

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