Communication between users is achieved by sensing subtle volitional muscle movements, breathing, and heartbeats, then presenting this information to the other user, via subtle haptic and sound cues. More subtle real-time biometric measures (similarly affected by changing thoughts and emotions) could be output as mild thermo-, vibro-, and/or electro-tactile stimulation on a distant partner’s bodily surface.
Source: Meyer, W. 2004. The body’s surface as a multimedia interface. In ACM SIGGRAPH 2004 Sketches. ACM Press, 122.
