A testability analysis system analyzes testability by evaluating controllability and observability at the level of a hardware functional description independent of architecture. In a preferred aspect, cathepsin S is selectively inhibited in the presence of at least one other cathepsin isozyme. Thus, it is possible to subsequently adjust the cutout limit safely and easily via a key on a handset, so that the cutout limit may be adapted to the actual application into which the actuator system is to be incorporated. Finally, particles are removed by uniform water film flowing downward along the collection electrodes. In this way, the subscriber, rather than reacting to invasive information or identity theft, may proactively control access to such information, thereby preventing the theft in the first place.