Anybody know (or can make an educated guess) about how the expression tracking is supposed to work? How can it read your facial expression from on your face? Seems like a very difficult angle to work from. Or are they leaving out the part where you have to use a separate camera to get that? Even then, some of the specific things they mention, such as eyebrow raises, are covered by the headset itself. I'm really skeptical about that feature, unless "tracking" is complete false advertising and expressions are triggered some other way.
Face tracking has been done in other headsets from (roughly) the same angle for like five years now. HP released a relatively cheap headset a year or two ago that did facial expression tracking from a similar angle.
It's a less-complicated problem than you might think.
