Wii Vitality Sensor - What does it actually do how can it be used in games?

[Spoon!]

@puffy,

I think it sounds really amazing and could have some great applications, like horror games, but I don't think I'd want a lie detector in my house, that could lead to so many problems.... just think, your wife, or girlfriend asks, "do these pants make me look fat?" or "Do you think (insert name here) is prettier than me?" and she has a convenient lie detector to hook you up to...