A method and system for non-invasive determination of at least one condition of a living organism selected from physiological conditions and emotional states of the living organism are described. The method comprises sensing electromagnetic waves emanated from a skin portion in an extremely high frequency (EHF) band, and obtaining from the sensed electromagnetic waves at least one unique biometric signature of the living organism indicative of the organism condition. The system includes an antenna array unit configured for sensing the electromagnetic waves emanated from the skin portion and a receiving unit configured and operable for obtaining the unique biometric signature. The sensed electromagnetic waves are indicative of bioelectric activity of neurally connected and electromagnetically interacting structures distributed in a skin portion of the living organism.