9to5Mac · July 29, 2026 — 13:03

Prototype smart ring cracks the holy grail of non-invasive blood sugar measurement

Prototype smart ring cracks the holy grail of non-invasive blood sugar measurement
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A prototype smart ring developed by engineers at the University of California appears to have cracked one of the holy grails of health wearables: non-invasive blood sugar measurement. The data is sent to a companion app on a paired iPhone. While existing smart rings rely purely on biophysical data extracted from sensors like those embedded into the Apple Watch, this…

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