Patent ID: 8571580

Claim:
A mobile communication device comprising: a network interface configured to allow the mobile communication device to communicate with one or more other mobile communication devices over a network; a geographic location circuit coupled to the network interface and configured to determine the location of the device relative to a terrestrial coordinate system; a graphical user interface including a display area allowing output of information to a user of the device; a map generation circuit configured to display a map encompassing an area around the location of the device on the graphical user interface, wherein the map generation circuit displays geographic location information on the display area for any of the one or more other mobile communication devices that are within a predefined range of the device and that are in communication with the device over the network wherein the graphical user interface comprises a first sub-display area displaying the map and a second sub-display area displaying identification information relating to respective users of the one or more other mobile communication devices; and a filter circuit configured to allow a user of the mobile communication device to limit sharing of geographic location information to certain users of the one or more other mobile communication devices by preventing display of the geographic location information on the displays of the mobile communication devices of users who are not selected as able to share the geographic location information.