The use of filter has two major advantages. It simplifies the use of the checklist in the field, since the inspector only has to choose a preset value in a scroll down menu in the App. For instance the city, region, branch, department, license plate, equipment number. This prevents database pollution. The other major advantage is that in depth analyses can be made after a period of time. You could for instance not only analyse the results of inspection checklist ‘A’ but use the filter to analyse all inspections ‘A’ carried out in Branch X in region Y on Weekday Z.