If you ain't got that swing ...
... just use an anthroscope. As mentioned earlier, mood is an essential part of communication. But if you need a little help, Sandia National Laboratories' Advanced Concept Group have created what they call an anthroscope. [Thanks Zack for the link]
This anthroscope monitors your perspiration and heartbeat, reads your facial expressions and head motions, analyzes your voice tones, and correlate these to keep you informed with a running account of how you are feeling. It also will transmit this information to others in your group so that everyone can work together more effectively
And there's a video of it in action here.
Blinking flip.