Method for automatic recognition of a predetermined gesture of a user, this method comprising the following steps: a) the acquisition, at a predetermined sampling frequency (f e), of the measurements of a triaxial accelerometer and of a triaxial gyrometer, each fixed onto a forearm of the user, b) the construction of several characteristic physical quantities of the gesture of the user from the measurements acquired from the accelerometer and from the gyrometer which have been performed from an instant td at which the gesture of the user begins and without taking account of the measurements acquired from the accelerometer and from the gyrometer performed before this instant td, then c) the classification of the gesture of the user in a predefined gesture category, chosen from among at least three possible predefined categories of gestures, only on the basis of these characteristic physical quantities constructed in the step b), characterized in that, in the step b), all the characteristic physical quantities, constructed from the acquired measurements performed by the accelerometer, are constructed from the acquired measurements performed by the accelerometer only within a time interval [t d; t i], where the instant t i is an instant, later than the instant td, at which the measured acceleration of the fist of the user in a direction X m changes sign and becomes negative, the direction X m being the direction parallel to the forearm of the user, directed from the elbow of the user towards the fist of the user, and a negative acceleration in the direction X m corresponding to a slowing down of the speed of the fist of the user in this direction X m, such that the characteristic physical quantities thus constructed are independent of the measurements of the accelerometer performed after the instant t i and therefore independent of the measurements of the accelerometer performed during the abrupt deceleration which marks the end of the gesture of the user. a) the acquisition, at a predetermined sampling frequency (f e), of the measurements of a triaxial accelerometer and of a triaxial gyrometer, each fixed onto a forearm of the user, b) the construction of several characteristic physical quantities of the gesture of the user from the measurements acquired from the accelerometer and from the gyrometer which have been performed from an instant td at which the gesture of the user begins and without taking account of the measurements acquired from the accelerometer and from the gyrometer performed before this instant td, then c) the classification of the gesture of the user in a predefined gesture category, chosen from among at least three possible predefined categories of gestures, only on the basis of these characteristic physical quantities constructed in the step b), characterized in that, in the step b), all the characteristic physical quantities, constructed from the acquired measurements performed by the accelerometer, are constructed from the acquired measurements performed by the accelerometer only within a time interval [t d; t i], where the instant t i is an instant, later than the instant td, at which the measured acceleration of the fist of the user in a direction X m changes sign and becomes negative, the direction X m being the direction parallel to the forearm of the user, directed from the elbow of the user towards the fist of the user, and a negative acceleration in the direction X m corresponding to a slowing down of the speed of the fist of the user in this direction X m, such that the characteristic physical quantities thus constructed are independent of the measurements of the accelerometer performed after the instant t i and therefore independent of the measurements of the accelerometer performed during the abrupt deceleration which marks the end of the gesture of the user.