Abstract: A system for detecting the passage of users in a ski resort, the ski resort comprising a plurality of ski runs and a plurality of ski lifts; the system for detecting the passage of users comprising: an image sensor and a processing unit, which are connected in communication with each other; wherein the image sensor is configured to capture images, such as a video, of a portion of the ski run, and send them to the processing unit; the processing unit being configured to analyse said images, such as the video, and detect moving objects, such as moving in a given direction, and count said detected moving objects; such as the image sensor is a video camera.