A rearview mirror system comprising a passenger-side mirror having a lower natural frequency andor more resiliency than the driver-side mirror. In one embodiment, a method for facilitating navigation of a menu of a dialogue system includes encoding data including information for navigating the menu in a machine-readable data structure and outputting the machine-readable data structure. A purchase request is received from the user via a mobile communication device, the purchase request being for a purchase from a merchant for a purchase amount.