A system for security checking or transport of persons by an elevator installation and to a method of operating this system wherein in a person is authenticated by at least one authentication signal. At least one mobile authentication device carried by the person detects an authentication signal of the person and checks it with at least one person reference. In the case of correspondence of the authentication signal and the person reference, at least one identification code is provided. The identification code is detected by a stationary recognition device and assigned to a predefined travel destination or to an input travel destination input at the recognition device by the person.