For some reason, Microsoft wants to peel away one of the layers of anonymity in online gaming - supposedly to shame unhealthy gamers. I guess that's another reason not to get an Xbox. ;-) Here's the patent abstract:
An avatar generator for a virtual environment reflects a physiological characteristic of the user, injecting a degree of reality into the capabilities or appearance. Thereby, many of the incentives of the real world are replicated in a virtual environment. Physiological data that reflect a degree of health of the real person can be linked to rewards of capabilities of a gaming avatar, an amount of time budgeted to play, or a visible indication. Thereby, people are encouraged to exercise. Physiological data that reflect the health and perhaps also mood also improve social interaction in virtual environments. People seeking to meet and become acquainted with particular types of people are not thwarted by the artificiality of avatars. The physiological data can be gleaned from a third party health data collection repository, a healthcare smart card, a real-time physiological sensor (e.g., blood pressure, heart rate, blood glucose, peak flow, pedometer, etc.)On the opposite side, since I'm not short or overweight, I guess I couldn't play a dwarf.