Will next-generation wearable sensors make us healthier?

There is certainly no shortage of headlines on wearable sensors these days. "A contact lens measures your glucose level." "New electronic tattoos could help monitor health during normal daily activities." A "headband can read your brainwaves." Numerous wearable sensors are currently on the market that can monitor body data including activity and sleep, heart rate, galvanic skin response, and electrocardiogram (ECG). But are these wearables making any difference? Are they actually making us healthier?

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