The word Reiki means free passage of Universal Life Force energy. When you are attuned to Reiki energy, the channels are opened to Universal Life Energy. Reiki attunements are much like tuning a radio to a desired station.
Reiki originated in ancient Tibet thousands of years ago. The Reiki calligraphy, in Sanskrit, was used in meditation in Tibetan monasteries. Reiki symbols were painted upon large wall hangings in the monasteries and acted as a the centre focus in the practices toward enlightenment by the Tibetan holy men.