A support system of the control of surveillance cameras, comprising: - a plurality of surveillance cameras, each installed in a respective site to be controlled; - a plurality of display devices installed in a control area, every display device having a known location in the control area; - a network infrastructure adapted to support the transmission of a plurality of videos from the surveillance cameras to the display devices; a plurality of control cameras installed in the control area to film an operator in the control area, said control cameras being located in predetermined positions in the control area, at different angles with respect to the operator; a controller configured to receive a plurality of videos from the control cameras and carry out repeatedly, at time intervals (I 1, I 2,..., I n), the followings steps: - processing the plurality of videos of the control cameras in a time interval (I i) to determine a pointing direction of the gaze of the operator; - determining, between said display devices, a display device pointed, in the time interval (I i), by the gaze of the operator; - determining a duration (d) of the pointing at said at least one display device pointed in the time interval (I i); characterized in that said controller being further configured to: - count, for each display device, the overall pointing duration in a plurality of time intervals (I 1, I 2,..., I n), said overall pointing duration being the sum of the pointing durations (d) at the display device in each time interval (I 1, I 2,..., I n); - compare the overall pointing duration of each display device with a minimum pointing duration (d min) of each display device; - control one or more display devices by activating a signal for drawing the attention of the operator, if the overall pointing duration at said one or more display devices is lower than the minimum pointing duration (d min). - a plurality of surveillance cameras, each installed in a respective site to be controlled; - a plurality of display devices installed in a control area, every display device having a known location in the control area; - a network infrastructure adapted to support the transmission of a plurality of videos from the surveillance cameras to the display devices; a plurality of control cameras installed in the control area to film an operator in the control area, said control cameras being located in predetermined positions in the control area, at different angles with respect to the operator; a controller configured to receive a plurality of videos from the control cameras and carry out repeatedly, at time intervals (I 1, I 2,..., I n), the followings steps: - processing the plurality of videos of the control cameras in a time interval (I i) to determine a pointing direction of the gaze of the operator; - determining, between said display devices, a display device pointed, in the time interval (I i), by the gaze of the operator; - determining a duration (d) of the pointing at said at least one display device pointed in the time interval (I i); - processing the plurality of videos of the control cameras in a time interval (I i) to determine a pointing direction of the gaze of the operator; - determining, between said display devices, a display device pointed, in the time interval (I i), by the gaze of the operator; - determining a duration (d) of the pointing at said at least one display device pointed in the time interval (I i); characterized in that said controller being further configured to: - count, for each display device, the overall pointing duration in a plurality of time intervals (I 1, I 2,..., I n), said overall pointing duration being the sum of the pointing durations (d) at the display device in each time interval (I 1, I 2,..., I n); - compare the overall pointing duration of each display device with a minimum pointing duration (d min) of each display device; - control one or more display devices by activating a signal for drawing the attention of the operator, if the overall pointing duration at said one or more display devices is lower than the minimum pointing duration (d min). - count, for each display device, the overall pointing duration in a plurality of time intervals (I 1, I 2,..., I n), said overall pointing duration being the sum of the pointing durations (d) at the display device in each time interval (I 1, I 2,..., I n); - compare the overall pointing duration of each display device with a minimum pointing duration (d min) of each display device; - control one or more display devices by activating a signal for drawing the attention of the operator, if the overall pointing duration at said one or more display devices is lower than the minimum pointing duration (d min).