Discover how smart rings 2026 track sleep, HRV, and fitness metrics. Compare Oura Ring 4, accuracy rates, battery life, and why rings outperform smartwatches for health monitoring. Ringconn - Official ...

BOSTON--(BUSINESS WIRE)--Today, Affectiva, a Smart Eye company, announced a new attention metric in its cloud-based Emotion AI offering. This metric, bolstered by Smart Eye's advanced automotive ...