Patent ID: 7545254
Filing Date: 2009-06-09
Classification: B60R,G07C

Abstract:
1. A method of protecting a motor vehicle (V), adapted for authorizing a starting of the vehicle only after a prior identification of a specific electronic tag (B) fitted with a transmitter/receiver circuit ( 6 ), situated inside a cabin of the motor vehicle, the method comprising the steps of: equipping the vehicle (V) with a central unit (UC) comprising a transmitter/receiver circuit associated with a plurality of antennas (INT configuring the central unit (UC) and the electronic tag (B) to implement an authorization procedure such that the central unit (UC) instructs the transmission of an identification request signal, and upon receipt of the identification request signal at the electronic tag, the electronic tag (B) is configured to transmit, in response, an identification signal identifiable by the central unit, wherein, the vehicle (V) has antennas (INT the electronic tag (B) has means of three-dimensional measurement (A the central unit and the electronic tag are configured to perform an authorization procedure, the authorization procedure comprised of the steps of: