A mobile electronic device is provided. The mobile electronic device includes an electronic device housing; a non-cellular communication module contained in the electronic device housing; a battery contained in the electronic device housing; a processor contained in the electronic device housing and electrically connected to the non-cellular communication module; a user interface operatively connected to the processor; and a memory electrically connected to the processor, wherein the memory stores instructions that, when executed, cause the processor to receive a first variable identifier and a first unique identifier from a first wireless signal generator in a geographical area including a plurality of wireless signal generators through the communication module, provide the first variable identifier through the user interface, associate the first variable identifier with a first point of interest and storing the association in the memory, receive a second variable identifier and a second unique identifier from a second wireless signal generator among the plurality of wireless signal generators through the communication module, and automatically associate the second variable identifier with the first point of interest, based on whether or not the second variable identifier is the same, at least in part, as the first variable identifier, and store the association in the memory.