Immobiliser system with controllable inhibiting means

An immobiliser system for a vehicle, comprising:

• a native transmitter-receiver unit integrated into the vehicle, said native transmitter-receiver unit including a native antenna and being configured so as to enable a wireless communication with a transponder associated with a switch key, and
• a locking device for allowing or preventing the wireless communication between the native transmitter-receiver unit and the transponder, said locking device comprising:
• a locking antenna arranged in the vicinity of the native antenna;
• a control unit configured to control the locking antenna in an enabled state, wherein the locking antenna does not interfere with the wireless communication between the native transmitter-receiver unit and the transponder, or in a locking state, wherein the locking antenna does interfere with said wireless communication;
• and
• the locking antenna comprising a coil having two terminal ends, the control unit comprising a controlled switch connecting said terminal ends and a driving means for controlling the controlled switch in an open state or in a close state.