Note that if the relative position of a target viewed from the communication apparatus 151 can easily be registered in the communication apparatus 151 together with information by which it is possible to identify the target, the screen as shown in FIG. 13 can be displayed for a newly purchased/installed target. FIG. 17 shows an example of a screen used to register the relative position information of a target in the communication apparatus 151 using a processing apparatus. Here, the processing apparatus may be the information processing apparatus 101, or may be an arbitrary apparatus having a function of specifying the relative positional relationship with the communication apparatus 151 and a function of communicating by a BLE communication function or the like, like the information processing apparatus 101. Note that if the processing apparatus is the information processing apparatus 101, information registered in the communication apparatus 151 here may be registered in the relative position information DB. In this case, since the information processing apparatus 101 can recognize the relative position between the target and the communication apparatus 151, processing as shown in FIG. 15 need not be executed for the target. On the other hand, when the information of the relative position of the target is registered in the communication apparatus 151 by processing to be described here, another information processing apparatus can obtain the information of the relative position by processing as shown in FIG. 15.
