Systems and method of identifying shipping anomalies are provided. The apparatus includes an appliance sized and structured to be placed in the pharyngeal region of a human or animal. Correlation of the defined regions with external data quantifying attention of a subject viewing the segment to locations on the screen provides measures of interest level and attention to visible features in the segment. In another embodiment, the communication system further dynamically controls a rate at which flow control messages are conveyed by the second node to the first node. numbers which are not winning numbers, and in the case of a win, issuing to the customer a ticket which is a winning ticket associated with the product or product range.