There are permanent measurements in Steenstraat, Zuidzandstraat, Noordzandstraat, Geldmunstraat, the market, Simon Stevinplein and at the station. Alderman of Smart City Minou Esquenet: “Citizens can use the busy dashboard on the website to see in real time how busy or how quiet it is in the city at a certain time.”
You will find the crowd barometer here.