A method of authorizing a person, comprising the steps of: receiving, by a reader associated with a central authorization system, authentication data transmitted from a personal authentication device; including, by the reader, the received authentication data in a request message and transmitting, by the reader, the request message to the central authorization system; receiving the request message at the central authorization system and retrieving the authentication data from the request message; performing an authentication process at a central authentication system using said authentication data; and executing an authorization process at the central authorization system based on the authentication process result, wherein the step of performing an authentication process includes the steps of: generating a query message including the authentication data and transmitting the query message to the central authentication system associated with the person authentication device; verifying the query message at the central authentication system by checking the authentication data in the query message; and generating a query response message containing data associated with the personal authentication device and transmitting the query response message to the central authorization system, and wherein the step of executing an authorization process includes the steps of: verifying the query response message at the central authorization system by checking the data associated with the personal authentication device; generating an authorization message if the verification of the query response was successful; and transmitting the authorization message to an actuator associated with the central authorization system. receiving, by a reader associated with a central authorization system, authentication data transmitted from a personal authentication device; including, by the reader, the received authentication data in a request message and transmitting, by the reader, the request message to the central authorization system; receiving the request message at the central authorization system and retrieving the authentication data from the request message; performing an authentication process at a central authentication system using said authentication data; and executing an authorization process at the central authorization system based on the authentication process result, generating a query message including the authentication data and transmitting the query message to the central authentication system associated with the person authentication device; verifying the query message at the central authentication system by checking the authentication data in the query message; and generating a query response message containing data associated with the personal authentication device and transmitting the query response message to the central authorization system, and verifying the query response message at the central authorization system by checking the data associated with the personal authentication device; generating an authorization message if the verification of the query response was successful; and transmitting the authorization message to an actuator associated with the central authorization system.