An adherence monitoring device configured for an inhaled medication delivery device, the adherence monitoring device including: a housing ; and at least one inductive coil sensor which includes at least one inductive controller, at least two inductive coils including a first inductive coil coupled to the housing and a second inductive coil coupled to the housing ; wherein: the first inductive coil is configured to exhibit a response to an inductive change caused by an event and to provide a first change signal in response to the inductive change caused by the event; and the second inductive coil is configured to exhibit a response to the inductive change caused by the event and to provide a second change signal in response to the inductive change caused by the event; wherein the event is a medication usage event or a false triggering event; wherein the first inductive coil and the second inductive coil are configured such that they exhibit different responses to the said same event; and the adherence monitoring device includes a processor configured to receive sensor data from the inductive controller representative of the first and second change signals provided by the first inductive coil and second inductive coil and to compare at least one characteristic of the first change signal and the second change signal to detect the occurrence of the event, and identify the event as a medication usage event or a false triggering event. a housing ; and at least one inductive coil sensor which includes at least one inductive controller, at least two inductive coils including a first inductive coil coupled to the housing and a second inductive coil coupled to the housing ; wherein: the first inductive coil is configured to exhibit a response to an inductive change caused by an event and to provide a first change signal in response to the inductive change caused by the event; and the second inductive coil is configured to exhibit a response to the inductive change caused by the event and to provide a second change signal in response to the inductive change caused by the event; wherein the event is a medication usage event or a false triggering event; wherein the first inductive coil and the second inductive coil are configured such that they exhibit different responses to the said same event; and the adherence monitoring device includes a processor configured to receive sensor data from the inductive controller representative of the first and second change signals provided by the first inductive coil and second inductive coil and to compare at least one characteristic of the first change signal and the second change signal to detect the occurrence of the event, and identify the event as a medication usage event or a false triggering event. the first inductive coil is configured to exhibit a response to an inductive change caused by an event and to provide a first change signal in response to the inductive change caused by the event; and the second inductive coil is configured to exhibit a response to the inductive change caused by the event and to provide a second change signal in response to the inductive change caused by the event; wherein the event is a medication usage event or a false triggering event; wherein the first inductive coil and the second inductive coil are configured such that they exhibit different responses to the said same event; and the adherence monitoring device includes a processor configured to receive sensor data from the inductive controller representative of the first and second change signals provided by the first inductive coil and second inductive coil and to compare at least one characteristic of the first change signal and the second change signal to detect the occurrence of the event, and identify the event as a medication usage event or a false triggering event. <EOS>