A rolling ball spline type of slip joint includes a first tubular member having a plurality of inwardly extending regions formed therein. For example, a predetermined or calculated amountcomposition of rolled coins may be dispensed based on a count of loose coins, or a mixture of rolled andor loose coins may be dispensed based on a command from a cash management software program or module. In the optical subsystem, the image surfaces for different color channels of the object are substantially separated. In a membrane structure having a membrane, a supporting frame and a plurality of threads connecting the membrane to the frame, an actuator can be integrated into one or more of the plurality of threads.