Weighing method using an electronic body weighing scale comprising a screen and communicating with a mobile telecommunication terminal equipped with a display screen, the body weighing scale and mobile terminal both communicating by Hertzian waves with a telecommunication network, said telecommunication network being configured to enable at least the mobile terminal to communicate with at least one supplementary telecommunication device (4, 6), the telecommunication network comprising at least one wireless local area network to which the body weighing scale belongs and a platform which communicates at least with the body weighing scale, the method comprising the following steps: a preliminary association step during which a code is displayed on the screen of the body weighing scale, the user enters said code on an input interface belonging to the mobile terminal, whereupon said code is sent by the body weighing scale to the server via the platform and the code entered via the input interface is sent by the mobile terminal to said server, after which the server verifies whether there is a match between the code received from the body weighing scale and the code received from the mobile terminal and, if there is a match, the server associates the body weighing scale with the mobile terminal in the wireless local area network, (a) at least one weighing step during which the body weighing scale takes at least one measurement representative of at least the user's weight, (b) at least one two-way communication step during which: - a user enters data in the mobile terminal and the mobile terminal transmits said information to the body weighing scale via the telecommunication network, - the body weighing scale transmits weighing data based on said measurement to the mobile terminal via said wireless local area network, (c) and at least one display step during which the mobile terminal displays on the screen information based on the weighing data transmitted during the communication step. a preliminary association step during which a code is displayed on the screen of the body weighing scale, the user enters said code on an input interface belonging to the mobile terminal, whereupon said code is sent by the body weighing scale to the server via the platform and the code entered via the input interface is sent by the mobile terminal to said server, after which the server verifies whether there is a match between the code received from the body weighing scale and the code received from the mobile terminal and, if there is a match, the server associates the body weighing scale with the mobile terminal in the wireless local area network, (a) at least one weighing step during which the body weighing scale takes at least one measurement representative of at least the user's weight, (b) at least one two-way communication step during which: - a user enters data in the mobile terminal and the mobile terminal transmits said information to the body weighing scale via the telecommunication network, - the body weighing scale transmits weighing data based on said measurement to the mobile terminal via said wireless local area network, (c) and at least one display step during which the mobile terminal displays on the screen information based on the weighing data transmitted during the communication step. (a) at least one weighing step during which the body weighing scale takes at least one measurement representative of at least the user's weight, (b) at least one two-way communication step during which: - a user enters data in the mobile terminal and the mobile terminal transmits said information to the body weighing scale via the telecommunication network, - the body weighing scale transmits weighing data based on said measurement to the mobile terminal via said wireless local area network, - a user enters data in the mobile terminal and the mobile terminal transmits said information to the body weighing scale via the telecommunication network, - the body weighing scale transmits weighing data based on said measurement to the mobile terminal via said wireless local area network, (c) and at least one display step during which the mobile terminal displays on the screen information based on the weighing data transmitted during the communication step.