This wearable sensor can detect stress level from sweat

Scientists have developed a waterproof wearable patch, which when applied directly to the skin, absorbs sweat and within seconds assesses how much cortisol -- stress hormone -- a person is producing.

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Scientists have developed a waterproof wearable patch, which when applied directly to the skin, absorbs sweat and within seconds assesses how much cortisol -- stress hormone -- a person is producing.