Here is an iPhone app that lets you capture facial motion on your phone and use it in games or animations. Face Cap lets you import your custom avatars from Blender or Maya. You can also export in FBX or TXT format with your blendshapes and animation data. The app can record head position and rotation data as well as eye motion.
Face Cap can send data over WiFi. It has the option to lock the head in place or hide it during recording. Your recording can be edited in any 3D software that supports ASCII-FBX.[where to get it]