Patent ID: 7196610

Claim:
An access control method, in which an access code is assigned to an access control device and is stored in the access control device, in which an access code is stored in a mobile communication terminal, in which a unique access control device identification for each access control device, stored in each respective access control device, is transmitted from the access control device to the mobile communication terminal, and in which the access code for the access control device is determined in the mobile communication terminal, in that the access code is determined which is stored, assigned to the received unique access control device identification, in the mobile communication terminal, comprising: generating a first digital certificate in the mobile communication terminal based on the determined access code and on access rights data, which are stored, assigned to the received unique access control device identification, in the mobile communication terminal, and which define access rights of the user for the access control device, transmitting the first digital certificate from the mobile communication terminal together with the access rights data to the access control device, generating a second digital certificate in the access control device based on the received access rights data and on the access code stored in the access control device, comparing the generated second digital certificate with the received first digital certificate, checking the received access rights data in the access control device, and clearing access upon agreement of the digital certificates and with sufficient access right.