1. A system for tracking and analyzing emotional engagement of people while shopping, the system comprising: a processor; a non-transitory storage medium comprising instructions which, when executed by the processor, cause the system to: use a camera to record image data, the image data including a retail environment; in response to the recording, use the processor to detect a person in the image data; analyze the image data to determine that the person read an ingredient list on an object with which the person is interacting; determine a negative emotion expressed by the person based on the person discarding the object after reading the ingredient list; select a sales action based on the emotion and the object, the sales action comprising an offer for an alternative object with a different ingredient list; and in response to the selecting, use a device that the person is wearing or carrying to execute the selected sales action.