A geolocation system comprising: - at least two items (A, B) to be geolocated, each item including: - a computer recognition code: - first wireless proximity communication means, able to communicate with first wireless proximity communication means of another item: - second long-range communication means: - a geolocation device; - a processing unit configured to transmit an activation signal of the geolocation device at regular time intervals and able to receive and store geolocation data supplied by the geolocation device, and configured to assign them a positive validity status during a predetermined time period, and a negative validity status beyond the predetermined time period, - a computer platform including at least one database listing the computer recognition codes of all the items and including third long-range communication means able to communicate with the second long-range communication means of the items, the system being such that the processing unit of one item is configured to, prior to the transmission of the activation signal: - open a channel of communication with another item by way of the wireless proximity communication means, - read the validity status of the other item, and, - if the validity status of the other item is positive, receive geolocation data stored in the processing unit of the other item and maintain the geolocation device in an inactive state, - transmit to the computer platform the geolocation data supplied by the processing unit of the other item. - at least two items (A, B) to be geolocated, each item including: - a computer recognition code: - first wireless proximity communication means, able to communicate with first wireless proximity communication means of another item: - second long-range communication means: - a geolocation device; - a processing unit configured to transmit an activation signal of the geolocation device at regular time intervals and able to receive and store geolocation data supplied by the geolocation device, and configured to assign them a positive validity status during a predetermined time period, and a negative validity status beyond the predetermined time period, - a computer recognition code: - first wireless proximity communication means, able to communicate with first wireless proximity communication means of another item: - second long-range communication means: - a geolocation device; - a processing unit configured to transmit an activation signal of the geolocation device at regular time intervals and able to receive and store geolocation data supplied by the geolocation device, and configured to assign them a positive validity status during a predetermined time period, and a negative validity status beyond the predetermined time period, - a computer platform including at least one database listing the computer recognition codes of all the items and including third long-range communication means able to communicate with the second long-range communication means of the items, - open a channel of communication with another item by way of the wireless proximity communication means, - read the validity status of the other item, and, - if the validity status of the other item is positive, receive geolocation data stored in the processing unit of the other item and maintain the geolocation device in an inactive state, - transmit to the computer platform the geolocation data supplied by the processing unit of the other item.