Patent ID: 7796012

Claim:
A method of controlling access to an area accessible by persons, particularly to a space closed by a door, with a first mobile communications unit on which at least one access code is filed, with at least one second mobile communications unit and with a receiver unit for receiving the access code, wherein the method comprises the following steps: a) transmitting the access code from the first mobile communications unit to the second mobile communications unit, the access code being transmitted and received only when the mutually communicating first and second mobile communications units are spaced from one another within a predetermined first distance, which first distance is a transmission range of the first mobile communications unit of less than ten meters; b) transmitting the access code from the second mobile communications unit to the receiver unit, the access code being transmitted and received only when the mutually communicating second mobile communications unit and receiver unit are spaced from one another within a predetermined second distance, which second distance is a transmission range of the second mobile communications unit of less than ten meters; c) checking the access code by the receiver unit; and d) freeing the access to the area if the check is successful.