XFAIR.check-in allows a person to set their attendance status in real time in our EMS (Event Management System) during a trade fair or event. This means that the service staff can see in EMS the attendance status of all persons at the trade fair or event. When using the app, a person can set their status and can also state a reason and return time when they are absent. By default, there are 4 reasons for absence available. However, these reasons can be modified. The app can only be used in conjunction with our EMS.