Abstract: A method for operating functional unit of a motor vehicle using an identification system, in which at least a first authorization is requested for operating the functional unit and an identification signal is transmitted to an identification device by an identification element of the identification system. The functional unit is operated after receiving and the functional unit is only operated in a second authorization. The second authorization is generated by the identification device. Using the identification device, a first signal duration of the identification signal is determined for determining a first spacing of the identification element at a first point in time, and a second signal duration of the identification signal is determined for determining a second spacing of the identification element at a second point in time, and the second authorization is generated depending on a comparison.

Abstract: A plurality of keys are registered to the vehicle for opening the vehicle. A respective key must answer within a predetermined timeslot after a first request transmitted by the vehicle, in order to open the vehicle. Several such successive timeslots are provided and several keys are allocated to at least one of these timeslots.

Abstract: A plurality of keys are registered to the vehicle for opening the vehicle. A respective key must answer within a predetermined timeslot after a first request transmitted by the vehicle, in order to open the vehicle. Several such successive timeslots are provided and several keys are allocated to at least one of these timeslots.

Abstract: The invention relates to a method for operating functional unit (32) of a motor vehicle (34) by means of an identification system (36), in which at least a first authorisation is requested for operating the functional unit (32), and in which an identification signal is transmitted to an identification device (38) by means of an identification element (26) of the identification system (36), and the functional unit (32) is operated after receiving, wherein the functional unit (32) is only operated in a second authorisation, and the second authorisation is generated by means of the identification device (38), wherein by means of the identification device (38), a first signal duration of the identification signal is determined for determining a first spacing (A1, A2, A3, A4) of the identification element (26) at a first point in time (t1), and a second signal duration of the identification signal is determined for determining a second spacing (A1?, A2?, A3?, A4?) of the identification element (26) at a second poi

Abstract: A method for locking and/or unlocking a vehicle having an input device for a code on the vehicle, via which the vehicle can be locked and/or unlocked, involves requesting the code via a mobile device having a mobile number registered to the respective vehicle with a data server. After the request, the data server generates a current code and send this to the mobile device and to the vehicle. The code can then be input via the input device and compared to the code sent to the vehicle and, should they match, locking and/or unlocking of the vehicle is enabled.

Abstract: A method for locking and/or unlocking a vehicle having an input device for a code on the vehicle, via which the vehicle can be locked and/or unlocked, involves requesting the code via a mobile device having a mobile number registered to the respective vehicle with a data server. After the request, the data server generates a current code and send this to the mobile device and to the vehicle. The code can then be input via the input device and compared to the code sent to the vehicle and, should they match, locking and/or unlocking of the vehicle is enabled.