Abstract: The invention relates to a method and a system for giving a substance (101) receptive and/or transmissive properties that allow the substance (101) to be treated by and/or to transmit a signal acquired by intercepting an electromagnetic field originating from a source substance. The substance (101) is subjected, by means of a transmitter (102), to an electromagnetic field and/or a sound (104) emitted at one or more frequencies included in a predetermined frequency spectrum for a predetermined period. The invention makes it possible to give the initially non-receptive and non-transmissive substance (101)y receptive and/or transmissive properties.