| 摘要 |
A device (100) for determining an identity of a vehicle comprises a connector (110) configured to be connected to the cigarette lighter outlet (230) of the vehicle (200). The device further comprises measuring equipment (310; 320; 330) configured to provide an electric signal (400) related to the engine speed of the vehicle, such that oscillations in the electric signal have a frequency proportional to the engine speed of the vehicle. The device is configured to allow determination of an identity of the vehicle based on the electric signal, such that the identity is independent of variations in the engine speed of the vehicle. The device also comprises a memory (340) configured to store the electric signal, and/or the identity of the vehicle. |
