Fenzian works through the skin

Due to the shared 'ancestry' of skin and nerves, the skin is ideally placed as an access gate to the body's nerve communication network.

As the skin is the interface between the internal body and the outside environment it is heavily served by nerve endings of many kinds. Along with the specific origins which it shares with the neurological network this density of nerve ends makes it a logical access route for CNS biofeedback using Fenzian.