The Vibraywave Cancer feedback unit is  non-contact Laser Doppler Vibrometer. Vibraywave  uses a new interference method and improves detection by 20 dB compared to traditional models. A built-in camera enables target verification by laser irradiation. Vibraywave  performs density velocity measurements in many difficult environments using contact vibration sensors; small actuators using piezoelectric elements, cell phones and digital cameras with MEMS (Micro Electro Mechanical Systems), inverters and other devices in EV/HEV. By using the Vibraywave and FFT analyzer, it is possible to visualize not only the vibration but also the vibration level.