Authentication device, authentication and document procedures for authentication of a person

The invention relates to an authentication device (110) for authenticating a person by means of an authentication document (100) including a documents body (101), wherein the document body (101) having a surface (103) having a surface region (103a) connected to a biometric feature of the person can be acted upon, and wherein a personalized on the basis of the biometric feature of the person optical filter in the document body (101) below the surface portion (103a) is embedded. The authentication device (110) (111 113a b,), comprises a transmission-reception structure which is formed a stimulation signal in the direction of the surface region (103a) to send out to obtain a light reflected on the biometric feature of the person first response signal transmitted from the optical filter (105) depends, and to receive a reflected in the biometric feature of the person second response signal that depends on the optical filter (105) and a processor (115) which is designed, the person from the reflected first response signal associate and the reflected second response signal to the authentication document (100).