A sensing device includes a situation acquisition unit acquiring information on situation of a site of interest sensed; a sensing range change unit changing sensing range of the situation acquisition unit; a position identification unit identifying position of the situation acquisition unit; and a sensing operation controlling unit which detects inhibited content, a subject of inhibition of transmission, from the information on the situation of the site of interest. If the inhibited content has been detected, the sensing operation controlling unit calculates position of the inhibited content based on the position identification information from the position identification unit. The sensing operation controlling unit controls the sensing range change unit, based on the position identification information including the position of inhibited content calculated, so that the position of inhibited content is not contained in the sensing range. An inhibited content detection unit outputs information on the site of interest to an operation terminal upon non-detection of inhibited content.