Like many health conscious Americans, Dr. Rosalind Picard wears a fitness tracker on her wrist. But hers doesn’t just track steps, it has an extra sensor that gathers medical information.
Picard’s smartwatch, developed by her company Empatica, records electrodermal (EDA) activity and wirelessly sends the data to a smartphone. The technology isn’t new, versions of the sensors have been used in polygraph tests for decades.
But new, highly sensitive sensor technology can now provide a continuous reading on our emotional states, linking the tiniest increase in sweating to psychological or physiological arousal.
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