Face tracking

[mattwestwick]

"But try looking at your monitor and moving your head around, you can still see perfectly. You actually can not really tell you are moving."

What? Please rephrase that, I have no idea what you mean.

The reason I liked the handycam part was that as our eyes move around a screen we have a tendency to move our heads a little bit. Using this slight movement to direct the on-screen perspective feels really nice. The only problem with it is that with increased sensitivity comes decreased stability, i.e. the view shifts around from ambient movement.
But this is nice since it's already programmed in a game like amnesia to simulate the players viewpoint by having it bob around and tilt with walking.