A method is disclosed, such as a method for determining a position of the positioning device, for synchronization of positioning devices, and/or for synchronization of slave anchor electronic devices. The method is performed by a system comprising a master anchor electronic device, and a plurality of slave anchor electronic devices including a first slave anchor electronic device. The method comprises broadcasting, from the master anchor electronic device, a first ultra-wide band, UWB, signal, at a first predetermined time. The method comprises receiving, at the first slave anchor electronic device, the first UWB signal. The method comprises determining, at the first slave anchor electronic device, a first transmission time based on the first UWB signal. The method comprises broadcasting, from the first slave anchor electronic device, a second UWB signal at the first transmission time.