USER PRESENCE CONFIDENCE AND MEDIA CONTENT VIEWING ESTIMATION

A content viewing estimation system including a module to receive a time measurement of how long at least part of a content item was rendered by an end-user rendering unit and outputted for display to an audio-visual outputting arrangement during a time window, a module to determine user interaction with the end-user rendering unit and/or the audio-visual outputting arrangement, a module to calculate an average content item duration of a plurality of content items rendered by the end-user rendering unit during the time window, and a module to estimate viewing by the user of the at least part content item such that if user interaction was not determined during the time window then time attributed to the viewing of the at least part content item is set to the minimum of a capping limit, the time measurement, and the average content item duration. Related apparatus and methods are also described.