The news desk
Garmin and Apple Watch PPG Sensor: 40 Future Metrics Ranked
The PPG optical sensor on Garmin and Apple watches could read 40 metrics beyond heart rate. The article ranks them into three categories: what ships today, what is coming soon, and what may only arrive last, noting that blood glucose monitoring ranks last. The original does not disclose the specific metric list or a timeline.
This site provides a summary. Read the source original for the full article.