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

9to5Mac • Wed, 29 Jul 2026

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

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 ring also tracks chemical biomarkers by analysing sweat …

What happened?

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 ring also tracks chemical biomarkers by analysing sweat …

Story details

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 ring also tracks chemical biomarkers by analysing sweat …

Why it matters

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Original source

https://9to5mac.com/2026/07/29/prototype-smart-ring-cracks-the-holy-grail-of-non-invasive-blood-sugar-measurement/