Typical motion capture uses tracking points placed on the actor at specific areas. This usually only works really well for skeletal tracking, like position of joints, etc. Though, it has been taken to extremes for films such as Appleseed where many tracking point were placed on actors’ faces.
Mova developed something different. It uses phosphorescent makeup & dye to create a random pattern of tracking points across skin & cloth to create pretty damn accurate tracking. You just have to take a look to really understand how it works.