An authentication method, in particular an access control method, for trusted seamless authentication, preferably for granting trusted seamless access to an asset, comprising: - obtaining, by an authentication device, position data of at least one mobile device (21, 22, 23), the position data of the at least one mobile device (21, 22, 23) being indicative for the position of the at least one mobile device (21, 22, 23) relative to the authentication device, - determining, by the authentication device, one mobile device of the at least one mobile device (21, 22, 23) which is within a recording zone, - recording, by the authentication device, biometric identification data of a carrier person of the determined mobile device, - sending, by the authentication device, the recorded biometric identification data to the determined mobile device, - receiving, in response to sending the recorded identification data, by the authentication device, authentication confirmation data and/or credential data from the determined mobile device, wherein, in addition to obtaining position data of at least one mobile device, the method further comprises: - obtaining, by the authentication device, position data of at least one person (31, 32, 33), preferably using at least one optical sensor which may be a camera, the position data of the at least one person (31, 32, 33) being indicative for the position of the at least one person (31, 32, 33) relative to the authentication device, - correlating of the position data of the at least one mobile device (21, 22, 23) and the position data of the at least one person (31, 32, 33) and determining that the at least one person (31, 32, 33) is a carrier person of the at least one mobile device (21, 22, 23). - obtaining, by an authentication device, position data of at least one mobile device (21, 22, 23), the position data of the at least one mobile device (21, 22, 23) being indicative for the position of the at least one mobile device (21, 22, 23) relative to the authentication device, - determining, by the authentication device, one mobile device of the at least one mobile device (21, 22, 23) which is within a recording zone, - recording, by the authentication device, biometric identification data of a carrier person of the determined mobile device, - sending, by the authentication device, the recorded biometric identification data to the determined mobile device, - receiving, in response to sending the recorded identification data, by the authentication device, authentication confirmation data and/or credential data from the determined mobile device, - obtaining, by the authentication device, position data of at least one person (31, 32, 33), preferably using at least one optical sensor which may be a camera, the position data of the at least one person (31, 32, 33) being indicative for the position of the at least one person (31, 32, 33) relative to the authentication device, - correlating of the position data of the at least one mobile device (21, 22, 23) and the position data of the at least one person (31, 32, 33) and determining that the at least one person (31, 32, 33) is a carrier person of the at least one mobile device (21, 22, 23).