The invention concerns a method for qualifying an alarm among the alarms stemming from a first supervision system supervising the activity of an individual, the system being adapted to compute an activity index that is representative of the activity of the individual, alarms being triggered by the supervision system in the event of a drift in the activity index, a drift corresponding to a difference in the value of the index in relation to a reference value, the method being such that it is implemented in a management server connected to at least one second supervision system, and that it has, on reception of an alarm triggered by the first supervision system, steps of obtainment of a drift in the activity index of the at least one second supervision system, comparison of the drift in the activity index of the first supervision system and a value that is representative of the drift in the activity index of the at least one second system, and qualification of the alarm according to the result of the comparison. The invention likewise concerns a device and a server implementing the method. According to another aspect, the invention concerns a method for requesting alarm qualification and a terminal implementing this method.