With both. We recommend heat maps with cameras for medium or small surfaces and heat maps with WiFi for large spaces such as shopping malls. Camera heat maps are only visual -without data- and are much more specific, even being able to dynamically see the hot and cold zones of a specific area within a period of time (time lapse).
As with the camera, the purpose is to visually present the areas with the highest number of visits within a given period of time. Flame can present these maps from the geolocation data of each mobile device detected by the WiFi network -by triangulation-. However, it is required that said WiFi network has this capacity and that, therefore, it has been taken into account for this specific purpose in the project and deployment phases of the equipment.
Notwithstanding the foregoing, it is also possible to make heat maps by Zones on a plane of a physical space, from a conventional WiFi network. Unlike WiFi heat maps that require precise geolocation, with zone heat maps it is possible to represent relevant KPIs of visits and flows between all zones that have been planned to be analyzed. They are a much more practical and less expensive solution.