Abstract: The invention relates to an authentication method and an arrangement for performing such an authentication method and to a corresponding computer program and a corresponding computer-readable storage medium, said method particularly providing a simple and very cost-effective method for the authentication of persons upon the usage of services with the aid of mobile standard terminals without technical expansions such as RNID equipment or the like. For this purpose, it is provided that in the authentication method a terminal (103) is used, which is equipped with a loudspeaker (109?) and/or color display (109) and special software.