A ratchet actuator for an ergonomic device has a thin profile due to the combination of multiple functions into single parts. The hanger includes a flexible pad. An association status can be determined for each object representation, which can designate the object representation as autonomous, containment, or subordinate. At this point, because a low resistant copper foil is used to form the PWB side wiring, a voltage drop of the element side wirings and a delay of a signal can be reduced.