The system and methods describe a computer system implementing an adjustable control signal path whose length may be precisely adjusted to control timing of a control signal that propagates along the path. A combination of standard, low-cost and low-power components are programmed to perform algorithm and performs realtime stereo and motion analysis on passive video images, including image capture, digitization, stereo andor motion processing, and transmission of results. The target system is unaware that the USB device is not connected directly to the system through a physical connection, and the target system does not need special software to implement the remote USB device. When the collar is threaded onto a bolt of the bolt assembly, the chamfered rim of the collar guides the collar into an aperture of the manway lid, such as when the lid is lowered into position against a base of the manway system. Thus, since more detailed information can be acquired, the safety of the user 5 who goes out is improved. Many different combinations of games may be played simultaneously on the gaming machine.