The invention relates to a method of pre-authenticating a user at a vehicle with a view to allowing the user to access the vehicle when a handle provided on a door of said vehicle is actuated, said user being provided with a mobile device, said vehicle and said mobile device each comprising a wireless communication interface operating according to the BLE protocol; each of said interfaces initially being in the “notification” state in which each of said interfaces transmits for a basic transmission time; said method comprising: —steps of connecting said interfaces according to the BLE protocol—steps of identifying and authenticating the mobile device, by the vehicle; a step in which the vehicle stores the identity data or the mobile device if the identification and authentication steps have been completed; —a subsequent step in which, when the handle of the vehicle door is actuated, the interface of the vehicle shifts from the “notification” state to the “scanning” state; —a tenth step in which the interface in the “scanning” state confirms the presence of the interface of the mobile device in the “notification” state.