Indoor positioning system

An indoor positioning system is a way to know where someone is inside a building. It uses special technology to track the location of a person or an object. The system works by sending out radio signals to a device, such as a smartphone or a sensor. The signals bounce off walls, furniture, and other things in the building, and return to the system. The system then figures out where the thing is based on how long it took for the signals to return. That way, the system always knows exactly where the person or object is in the building.