Abstract: The present invention relates to the field of methods for pairing an electronic apparatus and a user account within an online service. The invention describes a method of pairing in which the fleet management service generates a short identifier which it provides to the electronic apparatus during the initialization phase. The apparatus displays said identifier. The user copies this identifier into the interface for accessing the portal of the online service. The online service can then provide an association between this identifier and a user account to the fleet management service. The code generated being displayed in a readable manner and being shorter than a serial number, its copying by the user is facilitated and the risk of transcription error is minimized.