EasyCap Studios has a specialized technology called Facemotion. It's an easy-to-use facial motion capture system, which produces some pretty impressive results.
EasyCap has made it possible to use their system with lower hardware requirements, getting professional quality facial mocap animation at a lower price point than before, including recording rates of 100 frames per second among many other high end features.
Here's a demonstration of Facemotion in action. It's a bit surreal watching the actor and following her facial movements while they're replicated in real time on the animated character. For more info on Facemotion follow the link to EasyCap's site. Here's the link to the Forum Topic.