Whereby in the Classic Code of NLP, the client consciously selects the resource, in the New Code a context is created where unconscious processes are utilised (with minimal conscious interference) to bring about the change.
The pattern that bridged the way for the New Code to emerge was the old six step reframe, the first NLP pattern to explicitly use an involuntary signal. Signal utilisation is one of many processes in the New Code which enables a client to connect directly with their unconscious mind.