A method and an apparatus related to multiple modes are provided. In the method, the first mode is operated. The first mode is a host mode or a client mode, and the host mode is configured for broadcasting information related to a global coordinate system to a device operated with the client mode. A switching condition is detected, and the first mode is switched to the second mode. The second mode is another one of the host mode and the client mode. The second mode is operated. Therefore, the positioning information of a global coordinate system can be provided for motion sensing apparatuses.