User feedback system and method

A user feedback system for a user of a delivery device within a delivery ecosystem, comprising:

• a sensor platform comprising at least a first sensor operable to detect at least a first physical property associated with at least one of a user behaviour other than inhalation and a user physiology other than in relation to inhalation, wherein the at least a first sensor is a pressure or force sensor operable to detect one or more physical properties selected from the group consisting of:
• a peak pressure or a peak force applied to a user interface element;
• and a pressure or a force profile during a user interaction;
• an obtaining processor adapted to output data based upon the detected at least first physical property as all or part of a user factor indicative of a user state;
• an estimation processor adapted to identify a corresponding feedback action expected to alter the state as indicated by the user factor;
• and
• a feedback processor adapted to select at least a first feedback action identified by the estimation processor for at least a first device within the delivery ecosystem, wherein the feedback processor is adapted to cause a modification of one or more operations of at least the first device within the delivery ecosystem according to the selected at least first feedback action.