Methods, systems and devices for linking devices to tracking devices are provided. One method includes scanning, by an activity tracking device, for a semi-unique identifier broadcasted by a device. The method connects the device with the activity tracking device after the semi-unique identifier is found to be of the device by the activity tracking device. The activity tracking device is configured to communicate with the device to obtain device identification (ID) of the device. The method then automatically links the device to the activity tracking device when the device ID of the device matches a copy of the device ID stored in the activity tracking device. In one example, the tracking devices operate as a master and the devices operate as a slave.
