Secure method for managing the operating conditions of a apparatus by a user and equipment therefor

An anti-theft method for an engine-driven vehicle that manages operation of an apparatus of the vehicle, the method comprising the steps of:

• rendering operation of the apparatus possible after detection by a receiver situated close to the apparatus of a cyclic signal transmitted by portable transmitter;
• managing the operation of the apparatus with a controller, the controller being connected to a control circuit of the apparatus by means of a switching system after detection by the receiver of the cyclic signal;
• activating a presence detector situated close to or integrated with the apparatus;
• and
• activating the switching system to close the control circuit after detection of the cyclic signal,
• wherein activation of the presence detector locks the closure of the control circuit in order to not take into account any longer the cyclic signal to enable operation of the apparatus even when the cyclic signal is no longer received by the receiver.