| 摘要 |
Method for securing an access method for vehicles and mobile devices used as vehicle keys. A mobile device is repeatedly connected to the remote control device and characteristic synchronising data are generated for each connection. At least one part of the synchonrising data is stored in the mobile device and the remote control device. Characteristic legacy synchronising data of a preceding connection are transmitted from the mobile device to the remote control unit. A consistency check is performed in the remote control unit between the legacy synchronising data received from the mobile device and the legacy synchronising data stored in the remote control device. If the data are consistent, the connection is terminated and a synchronisation interval is waited before the connection is restored for the next synchronisation. If the data are inconsistent, the mobile device is blocked from further access to vehicles. |
