Bioresonance therapy is a type of alternative medicine. A similar, older method is electroacupuncture according to Voll. Bioresonance therapy was invented in 1977 and marketed as MORA-therapy by the German Franz Morell and his son-in-law, engineer Erich Rasche and was named after them (MOrell RAsche). This method is based on former radionics introduced in the USA during the 1920s. It is not part of scientific medicine, due to an absence of evidence. Some of the machines contain an electronic circuit measuring skin-resistance, akin to the E-Meter used by Scientology, which the bioresonance creators sought to improve. Bioresonance has nothing in common with biofeedback concepts.