| abstract |
Indicates the concentration of acetophenone of the user acquired by a sensor that detects acetophenone released from the skin surface of the user in order to objectively grasp the stress state of the user and prevent mental diseases of the user The biological gas information is acquired via the network at multiple timings, together with time information corresponding to each of the plurality of timings, and the normality is stored from the memory storing information representing the upper limit of the normal range of the acetophenone per unit period. Information representing the upper limit of the range is read out, and based on the acquired biological gas information, a time zone in which the concentration of acetophenone of the user exceeds the upper limit of the normal range is determined, and information indicating the determined time zone is used as the user Output to the information terminal of |