Beside the right number of operational staff, the size of a passenger terminal is also a critical cost factor of an airport. Providing the right amount of space for the passengers is therefore the real „Balance Challenge“ - the longer the waiting time the more space per passenger is needed.

How much space exactly? Well, this depends on the passenger structure. An efficient passenger terminal provides the right amount of space at the right place at the right time in order to maximise both commercial revenues and operational efficiency. In order to calculate the flow, we need to consolidate various data sources like traffic stats, access control, DSC data and whatever is available. 

Knowing more about the show up profiles of passengers helps to actively manage the flows and hence leads to a better utilisation of the facilities and higher commercial revenues.
 
Another question will be whether more space will be needed due to the Corona virus. This however cannot easily be covered by simply adding space.