A method for validating that an object is an element of the human body, comprising at least the following steps: - illuminating, by at least a first light source emitting in a first range of wavelengths in the infrared, and by at least a second light source emitting in a second range of wavelengths in the visible spectrum, an object for which it is desired to validate that it corresponds to a human body element, said second light source emitting light at wavelengths lower than those of the first source; - acquiring an image by an image sensor sensitive to a wavelength range covering at least in part the first range of wavelengths in the infrared and the second wavelength range in the visible spectrum, the pixels of said image being associated with at least two characteristic values respectively of a first color component and of a second color component, said second component corresponding to at least one wavelength of the second wavelength range emitted by the second light source, the respective illumination light powers of the first light source and of the second light source being previously calibrated so that the first color component and the second color component are statistically balanced for an element of the authentic human body, the first color component and the second color component being statistically balanced for an authentic element of the human body when the difference between the first color component and the second color component in an area of an image corresponding to said element of the authentic human body is lower than a threshold; - implementing a validation processing based on comparisons between the values of the second color component of the pixels of an area of interest of the image and the values of the first color component of said pixels of an area of interest of the image, in order to make it possible to validate that the object corresponds to an element of the human body, the values of the first color component and the values of the second color component being statistically balanced for an element of the authentic human body; - validating or not the authenticity of the object based on the result of the validation processing. - illuminating, by at least a first light source emitting in a first range of wavelengths in the infrared, and by at least a second light source emitting in a second range of wavelengths in the visible spectrum, an object for which it is desired to validate that it corresponds to a human body element, said second light source emitting light at wavelengths lower than those of the first source; in the infrared, and by at least a second light source emitting in a second range of wavelengths in the visible spectrum, an object for which it is desired to validate that it corresponds to a human body element, said second light source emitting light at wavelengths lower than those of the first source; - acquiring an image by an image sensor sensitive to a wavelength range covering at least in part the first range of wavelengths in the infrared and the second wavelength range in the visible spectrum, the pixels of said image being associated with at least two characteristic values respectively of a first color component and of a second color component, said second component corresponding to at least one wavelength of the second wavelength range emitted by the second light source, the respective illumination light powers of the first light source and of the second light source being previously calibrated so that the first color component and the second color component are statistically balanced for an element of the authentic human body, the first color component and the second color component being statistically balanced for an authentic element of the human body when the difference between the first color component and the second color component in an area of an image corresponding to said element of the authentic human body is lower than a threshold; - implementing a validation processing based on comparisons between the values of the second color component of the pixels of an area of interest of the image and the values of the first color component of said pixels of an area of interest of the image, in order to make it possible to validate that the object corresponds to an element of the human body, the values of the first color component and the values of the second color component being statistically balanced for an element of the authentic human body; - validating or not the authenticity of the object based on the result of the validation processing.