We as humans love to be bathed in light, so we can see the world.

Our RayIQ sensor detects how light is bathing the site where it is sitting in 3D space.
Why? to know what kind of light is illuminating a site, where it is coming from (what kind of shadows it is creating), and how bright it is (regardless of sensor orientation). With this information on how a site is bathed in light, RayIQ extracts pose, which is the full description of motion: 3D position (x,y,z) + 3 rotations of orientation (roll, pitch, yaw).