Samsung BioSensor - Explanation and uses

[Obsydian]

I am doing a mini series of measurements available from my Watch Ultra, and though a separate post covering the "how does it work", but also the developer methods Samsung is pushing, which I find very interesting.

HOW SAMSUNG BIOSENSOR WORKS

Accuracy:
Samsung’s biosensor is good for general wellness, but not as accurate as hospital-grade or professional devices. Medical sensors use stronger, more precise hardware and are calibrated more often.

Calibration:
Samsung’s watch needs you to calibrate with a cuff to stay accurate.
Medical devices are self-calibrated or factory-tested for reliability.

Contact vs No Contact:
Samsung’s sensors are optical (light-based) and need skin contact.
Some no-contact medical devices (like radar, laser Doppler, or thermal sensors) can measure from a short distance, but they’re much larger and used in clinics.

Data Depth:
Medical systems can read exact blood pressure, oxygen, flow, and tissue details.
Samsung’s watch gives estimates and trends, not detailed diagnostics.

Purpose:
Samsung’s biosensors are made for daily tracking and early awareness,
while medical no-contact devices are for diagnosis and treatment.

A Samsung newsroom summary 

SAMSUNG HEALTH SENSOR SDK BIOSENSOR WORKS

What is it:

Enables apps to read data from the BioActive Sensor, which includes capabilities like optical heart rate, ECG, bioelectrical impedance, etc. Provides both raw sensor signals (e.g. raw PPG, ECG) and processed metrics (heart rate, SpO₂, body composition, sweat loss, etc.).

Samsung Health Sensor SDK | Samsung Developer

[Tourbillon De La Vie]

Good info