The invention relates to a method for securing a command to be applied to a motor vehicle, characterized in that said method comprises: a first step of generating first data, via a vehicle electronic control unit; a second step of sending said first data to a mobile terminal comprising a screen, via the electronic control unit; a third step of displaying the first data on the screen of the mobile terminal; a fourth step in which a human user processes the first data in order to obtain second data; a fifth step of sending the second data to the electronic control unit via the mobile terminal; a sixth step of comparing said second data to a key of the first data, via the electronic control unit; if the second data is validated by the key of the first data, a seventh step of activating the motor vehicle via the electronic control unit, in order to implement at least part of the control.