Geolocation method and anti-theft tracer implementing such a method

A geolocation method for a firearm using an anti-theft tracer, said geolocation method comprising the following steps:

• a step of determining geographic coordinates of the anti-theft tracer, using a geolocation module of said anti-theft tracer;
• a step of transmitting the geographic coordinates to a remote server, by means of a first or a second telecommunications module of the anti-theft tracer;
• a timeout step of providing an electrical supply to one or more of the geolocation module, the first telecommunications module, and the second telecommunications module in order to enable operation;
• and, following the timeout step,
• a step of putting the anti-theft tracer onto standby, in which an electronic circuit of said anti-theft tracer cuts off the electrical supply of the geolocation module and of the second telecommunications module,
• wherein the remote server transmits a first warning signal to a mobile telephone when the geographic coordinates determined by the geolocation module change relative to reference geographic coordinates taken before entering standby mode, and wherein the remote server transmits a second warning signal to the mobile telephone when the geographic coordinates determined by the geolocation module show a movement of the anti- theft tracer that is greater than a reference amplitude.