The Pedestrian Analytics System (PAS) is an open and holistic IoT system. It is used to capture and analyse customer flows in transportation, retail, and buildings or public spaces with high traffic. It includes sensor technology, a server platform, data handling, and analytics, as well as numerous applications. Thanks to modern interfaces, data connections between the PAS and other systems are easily established. PAS is compatible with all sensors and APIs available on the market. It is suitable for real-time applications where inbuilt algorithms enable forecasts and virtual counting by referencing historical or external data sets.