Reiki is a pseudoscientific form of energy healing, a type of alternative medicine created by Mikao Usui in Japan in the 1920s. Reiki practitioners use a technique called palm healing or hands-on healing through which, according to practitioners, a "universal energy" is transferred through the palms of the practitioner to the client, to encourage emotional or physical healing. It is based on qi, which practitioners say is a universal life force; there is no empirical evidence that such a life force exists.