A method for securely connecting a watch to a remote server of a service provider including the following steps: authenticating the wearer of the watch authorizing access to use the functions of this watch, and selecting one of the functions from an input interface of the watch aiming at establishing a connection between the watch and the remote server; identifying the wearer of the watch from at least one biometric information element included in a portion of this wearer's skin; transmitting to the remote server an authentication element relating to the selected function once the wearer is identified, and carrying out an authentication of the wearer by the remote server from the authentication element in order to authorize an exchange of data between the watch and this remote server.