Patent ID: 8311616

Claim:
A method for non-invasive determination of at least one condition of a living organism selected from physiological conditions and emotional states of the living organism, the method comprising: sensing electromagnetic waves in an extremely high frequency (EHF) band emanated or reflected from the living organism, said sensing comprising sweeping at least a portion of said EHF band and obtaining an electromagnetic radiation pattern for said at least a portion of the EHF band, the electromagnetic waves including radiation originated from spiral sweat ducts of sweat glands distributed in a skin portion of the living organism, the radiation being indicative of an information signal related to bioelectric activity of said sweat ducts; and obtaining from the information signal related to bioelectric activity of said spiral sweat ducts at least one unique biometric signature of the living organism indicative of said at least one organism condition by: producing an extremely high frequency (EHF) signal based on the sensed electromagnetic waves in said at least a portion of the EHF band, the EHF signal including an EHF carrier electromagnetic signal modulated by the information signal related to bioelectric activity of spiral sweat ducts; heterodyning the EHF signal from its extremely high carrier frequency band to a lower frequency band to produce an intermediate frequency electrical signal; demodulating said intermediate frequency electrical signal to provide said information signal representing at least one modulating function selected from a amplitude modulating function, a frequency modulating function, and a phase modulating function; converting said information signal from analog form to digital form to produce a digitalized information signal; and analyzing said digitalized information signal for determining said at least one biometric signature.