User feedback system and method

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

• an obtaining processor adapted to obtain one or more user factors indicative of a state of the user;
• and
• an estimation processor adapted to identify a two-step correspondence between the obtained one or more user factors indicative of user state and at least a first feedback action, in which the two-step correspondence comprises:
• a first correspondence between the obtained one or more user factors indicative of user state and at least a first state of the user;
• and
• a second correspondence between the at least a first state of the user, and at least a first feedback action;
• and
• the feedback action being expected to alter a state of the user as indicated at least in part by the one or more user factors.