Voice Technology™ was first discovered by Dr Roger Callahan in the mid-eighties. It is an objective proprietary method in which the voice is used as the basis for TFT diagnosis. Thus the perturbations — and the exact tapping sequence required to eliminate the problem — can be readily elicited. This enables the diagnosis and treatment to be done by telephone. Therefore this state-of-the-art, precise solution to emotional problems can be available without the need to travel at your convenience wherever you are in the world.