SensorFM: Toward a General Intelligence and Interface for Wearable Health Data

Summary

Google Research released SensorFM in July 2026 — a large-scale sensor foundation model pretrained in a fully self-supervised manner on 1 trillion minutes (~1.9M years) of unlabeled wearable data from 5 million consented participants across 100+ countries and 20+ device models (primarily Fitbit and Pixel Watch). It processes ~34 features derived from PPG, accelerometer, EDA, skin temperature, and barometric altitude. Four model variants scale from ~100K to 100M parameters.