Fitbit is creating a wearable, worn while asleep, that detects whether or not someone has sleep apnea

Fitbit, the wearable fitness tracking company, plans to create a wearable to detect sleep apnea, a disorder that causes a person to have trouble breathing, or to stop breathing, while asleep.

The device will monitor the wearer's blood oxygen levels while they sleep by using a small light to scan their skin. The light searches for inconsistencies in blood oxygen and identifies the color of the wearer's blood. A person with red blood cells has plenty of oxygen, while those with bluer blood cells have less oxygen. After a time, the device notifies the wearer if they need to consult a doctor about the condition. Those who already have sleep apnea can use the device to determine how well their current treatment works for them.

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