A new way of measuring vital signs

Written by

Artur Pio

What is Remote Photoplethysmography (rPPG)?

Remote Photoplethysmography (rPPG) is a breakthrough technology that measures vital signs such as heart rate (HR), blood pressure (BP), respiration rate (RR), and oxygen saturation (SpO₂) — using nothing more than a standard camera. Unlike wearables or contact-based devices, rPPG works entirely contactless, transforming webcams, tablets, or smartphones into powerful health monitoring tools.

How does rPPG work?

At its core, rPPG is based on a simple principle: light interacts differently with the skin depending on blood volume. Every time the heart beats, tiny changes in facial blood flow alter skin coloration in ways invisible to the human eye.

A camera captures a short facial video.
Subtle light fluctuations on the skin are analyzed.
Advanced AI and signal processing algorithms transform these patterns into accurate vital signs.

This allows rPPG to deliver clinically validated health metrics - all this happens in seconds - completely contactless, seamless, and ready for integration into digital healthcare workflows.