A wallet is disclosed in which a theft prevention device is installed. The mounting components are configured so that the air flow component is automatically in a deployed position when the rear door is closed, in which position the air flow turning component turns air flow passing along the side the vehicle inward to thereby reduce drag. The integrated circuit further comprises a synthesizer control block, coupled to the phase detector, for receiving the error signal to generate a delay select signal, wherein the synthesizer control block comprises an integral adjustment filter and a proportional adjustment filter. When the two sections are urged toward each other, the small quantity of viscous fluid between the two sections is urged to exit through a channel in one of the two sections. Other techniques for automatically detecting meniscal tears includes receiving a meniscus object portion of scan data from a scanning device and receiving threshold data that indicates a meniscus extraction threshold.