E4 wristband, Real-time physiological signals

The E4 is a medical-grade wearable device that offers real-time physiological data acquisition and streaming.

Self-Interfaces: Utilizing Real-Time Biofeedback in the Wild to Elicit Subconscious Behavior Change Proceedings of the Fourteenth International Conference on Tangible, Embedded, and Embodied Interaction

Towards PPG-based anger detection for emotion regulation, Journal of NeuroEngineering and Rehabilitation

Analyzing Stress Responses Related to Usability of User Interfaces

E4 Wristband Rev.2