Updated: Why non-invasive glucose readings are proving so tough

Whether it’s the Apple Watch using ECG to highlight serious health issues or the Samsung Galaxy Watch helping you keep tabs on your blood pressure, wearables have come a long way from step tracking.

The likes of Apple, Fitbit and Samsung now talk about their wearables as health monitoring devices, and while some features on offer still lack the regulatory approval to offer data on par with medical devices, things are changing.
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