Person tracking refers to systems that track the position of people indoors or outdoors. This type of tracking is used, for example, in care and as a kids tracker in tourism. The technology works according to the same principles as asset tracking. This means that the persons to be tracked must be equipped with transmitters whose signals must be intercepted and interpreted by a receiver infrastructure. Person tracking is also an important element in the context of rescue navigation, for example in large industrial facilities. The system tracks the position of each user at all times and guides emergency services to helpless targets or to the scene of an accident in the fastest and safest way possible. Unlike conventional systems, it is not necessary for a person in an emergency situation to actively make an emergency call in order to determine the position.