Authentication apparatus for authenticating a person

The invention relates to an authentication device (100) for authenticating a person, comprising: an illumination source (101), which is designed to illuminate an area of ​​skin of the person with an illumination light in a predetermined wavelength region in which the illumination light at least partially penetrates into the skin area; a detector (103) for detecting a detection image of the skin area in the predetermined wavelength range; and a processor (105) for authenticating the person on the basis of the detection image.