Electronic signal based authentication system and method thereof

An electronic signal based anti-theft authentication method for a vehicle by controlling a steering system, comprising of the steps:

• configuring a signal intervention unit between a torque sensor of the steering system and power steering electronic control unit of the vehicle;
• detecting and comparing authentication data according to a user input with pre-configured user authentication data upon ignition of the vehicle;
• detecting of events indicating an unauthorized operation of the vehicle;
• and
• outputting a control signal in accordance to a detected authentication status by an authentication module and sending a signal from the torque sensor of the steering system to the power steering electronic control unit through the signal intervention unit,
• wherein the signal intervention unit comprises a functional flow intervention module configured to receive a signal from the torque sensor and send an altered pre-configured signal or an unaltered signal to the power steering electronic control unit for driving the steering motor, in accordance with a detection result provided in response based on the detected authentication status by the authentication module;
• wherein, when the control signal indicates an unauthorized user, the functional flow intervention module sends the altered pre-configured signal to the power steering electronic control unit of the vehicle for setting a steering directional lock, resulting in the vehicle being steered only in one direction irrespective of the steering wheel being turned clockwise or anti-clockwise by the unauthorized user;
• wherein, when the control signal indicates an authorized user, the functional flow intervention module sends the unaltered signal to the power steering electronic control unit of the vehicle, which does not set the steering directional lock, thereby allowing the vehicle to be steerable in all directions by the authorized user.