Telemonitoring is regarded as a means to maintain a relatively high quality of life for independently living elderly. This paper discusses a requirements study of a system to, foremost, telemonitor activities of daily living (ADL) of the elderly. The study utilizes literature and in-depth interviews with medical specialists. From the interview results can be concluded that, besides from elderly’s own input, monitoring different aspects of movement, food consumption and sleep pattern are regarded as most beneficial to the medical specialists.