Device (1) for preventing the formation of bedsores, the device (1) comprising: the sensors (3) arranged between the support and the individual, the sensors (3) being arranged so as to indicate the presence of an object on the support； a housing (4) connected to the sensors (3), the housing (4) being provided with: a control element (10) configured to perform the steps of a method (100) comprising: a measurement step (110) ； a step (121, 122, 123, 124, 125) of calculating an indicator of a contact surface of the individual with the support； a step (130) of detecting the presence of the individual on the support as a function of the indicator of the contact surface of the individual with the support； a step (140) of detection of absence of movement performed by the individual as a function of the indicator of the calculated contact area, if the presence of an individual is detected on the support； a step (150) for detecting the amplitude of the movements made by the individual as a function of a variation in the time of the indicator of the calculated contact area, if a lack of motion is not detected； a step (160) of notifying the state of the individual； a memory (12) capable of recording the steps of the method (100)； a tracking terminal (11) capable of displaying the step (160) of notifying the state of the individual.Dispositif (1) pour la prévention de la formation d'escarres, le dispositif (1) comprenant :- les capteurs (3) disposés entre le support et l'individu, les capteurs (3) étant disposés de sorte à indiquer la présence d'un objet sur le support ；- un boîtier (4) relié aux capteurs (3), le boîtier (4) étant muni :o d'un élément (10) de contrôle, configuré pour réaliser les étapes d'un procédé (100) comprenant :- une étape (110) de mesure ；- une étape (121, 122, 123, 124,125) de calcul d'un indicateur d'une surface de contact de l'individu avec le support ；- une étape (130) de détection de présence de l'individu sur le support en f
