Abstract: A system, consisting of a plurality of Remote Monitoring Units and a Central Computer, for automatically monitoring the selection of a Program Source made by a Subscriber. Each Remote Monitoring Unit has a microprocessor, associated Program and Data Memory, and Control and Interface circuitry. Each of the remote monitoring units maintains a software implemented real-time-clock. When a selection has been made by a Subscriber, the time of day and channel identification (ID) is recorded in the onboard memory.Communication with the central office computer is initiated by the remote monitoring unit at preprogrammed intervals over the conventional voice telephone network using the individual Subscriber's telephone line. Communication with the central office computer is via frequency shift keyed audio tones.