Abstract: A method of operating a device includes sending to a server system a request for data relating to a particular number of elements in the vicinity of a location of the device, receiving a response with data relating to a set of elements, the data including data specifying a location associated with each of the elements, causing a user interface to provide an output representing data related to one or more of the elements, wherein the configuration of the output is dependent upon the location of the elements relative to the location of the device, and in response to a change in the location of the device, updating the output using the data in the response. A device is shown carrying out the method as well as a system including the device and a server.

Abstract: A system (1) includes a plurality of mobile devices (21 . . . 2N) connectable to a server system (3) via a network system (4), one or more computing devices (5) connectable to the server system (3). The system (1) also includes a global navigation satellite system (36) and a plurality of transmitters (371 . . . 37N?). For example, the system can be for providing location-based and/or social networking services to users of the mobile devices (21 . . . 2N). Improvements in aspects of the underlying technology are described.

Abstract: A system (1) includes a plurality of mobile devices (21 . . . 2N) connectable to a server system (3) via a network system (4), one or more computing devices (5) connectable to the server system (3). The system (1) also includes a global navigation satellite system (36) and a plurality of transmitters (371 . . . 37N?). For example, the system can be for providing location-based and/or social networking services to users of the mobile devices (21 . . . 2N). Improvements in aspects of the underlying technology are described.