A latch assembly includes a latch plate having an opening therethrough; and a latch shaft having a shaft member and a positioning shoulder disposed on the shaft member. Differences in surface potential were measured for insulating and conducting molecule SAMs on gold. The trough-shaped wheel track is curved so as to form a closed contour. In accordance with the kind of the signal to be transmitted, the first or the second control method is selected for communication. In a more particular embodiment, the emitting of the infrared energy is synchronized with the camera such that the infrared energy is emitted onto the field of view at one half of an existing frame rate of the camera. Touches on the touch sensor can then be sensed by measuring the voltage at the touch location on the resistive touch region.