A system for removal of hair includes an instrument having a frame with a trailing handle segment and a leading treatment segment, a manually manipulative actuator mounted relative to the trailing handle segment of the frame and a drive member operatively coupled to the actuator and extending at least partially within the leading treatment segment of the frame. The mapping method implemented by the apparatus comprises receiving a digital signal having a high-bit portion and a low-bit portion. In one embodiment, detected field strength is used to dynamically vary the impedance of a tank circuit whereby, over time, induced current is maximized. Vehicle speed and brake actuation periods are derived from other commonly employed sensors.