Quick Conclusion: Recent 2025 benchmark confirming smartphone hardware sensitivity for medical-grade cardiac and respiratory monitoring.
đź“Š Key Accuracy Metrics
| Metric | Result |
|---|---|
| Heart Rate LoA | ±7.33 ms |
| Heart Rate R2 | > 0.999 |
| Breathing Rate LoA | ±0.51 breaths/min |
| Breathing Rate R2 | 0.993 |
🔍 Study Analysis
Objective & Population
Technical Validation Study. Cohort: 24 healthy volunteers (N=24).
What it Supports
The study supports the use of high-frequency smartphone sensors to extract heart rate variability (HRV) and breathing rates with extreme precision, achieving heart rate accuracy (±7.33ms) sufficient for clinical analysis.
What it Does Not Support
This study does not provide evidence for accuracy during vigorous physical activity or for diagnosing heart rhythm disorders in a home setting.
đź› Technical Context
- DOI: 10.3390/s25041094
- Authors: Cinotti et al.
- Confidence Tier: Supporting
