The XS Server receives the data streams (no video, just moving coordinates for every single passenger) from all sensors. Databases can be used for configuration data, measurement data and streaming data. The server software has a base layer that features sensor and multi-sensor management, configuration as well as visualization and outputs the tracking data. On top of the base layer, different application modules can perform the required algorithms to calculate waiting times and similar features based on the tracking data. The reporting functionality of the XS Server is based on Excel templates, which can automatically be refreshed and sent to email recipients.