By controlling their own body's vibrations a tuner may, therefore, control the objects around them. The limitations of this power are solely hinged upon the tuner's own knowledge and creativity. In order to control a substance, the tuner must know both the properties of the substance and what it naturally vibrates to.
Though true master tuners are rare, they may be found in every walk of life. In learning to master this art, tuners are taught a code of ethics. However, it seems that the ethics are more concerned with uses of power than whatever government rules happen to be in place at the time.