The Signal
Wearable Technology
Wearable Technology articles from The Signal by Sensor Bio.
3 articles
Latest
Smart ring vs smartwatch PPG: different, not better
Finger and wrist PPG record different pulse waveforms. What the research says about vascular bed, amplitude, notch visibility, motion, contact and wear, and which body site suits which question.
Real-time physiological data streaming: platform needs
Review the latency, timing, signal-quality, interoperability, and security requirements for streaming physiological data into digital health systems.
PPG Signal Quality: The Physiology Behind Wearable Accuracy
Why PPG waveform quality determines wearable metric validity: a validation checklist, common failure modes (motion, perfusion, skin tone), and product rules for abstention and reporting.