A robot arm assembly includes a support member, a first rotating member rotatably connected to the support member, a second rotating member rotatably connected to the first rotating member, and a driving mechanism to drive the first rotating member. A reservoir within a package contains a specified quantity of the agent and is either contiguous with, or coupled to, a dispensing node such as a swab. The display system is mountable to a printed circuit board positioned within the case of the mirror assembly. A direction estimating unit generates a generative complex number data based on the complex number data so as to correspond to a data generation unit.