A system and method for sharing geographical location information among a set of wireless telecommunication devices, such as mobile telephones. A first wireless telecommunication device generates geographical location information of that wireless telecommunication device, either through a resident device such as a GPS device, or has another computer device on the network provide the geographic location information, and then shares the geographical location information through sending the location information to one or more servers for relay to a predesignated target set of wireless telecommunication devices. The server stores the identity of member devices of the target set and controls communication between the first wireless telecommunications device and the member devices of the target set. A second server can be used to modify the geographical information, such as providing a map showing the location of the first wireless telecommunication device and other member devices of the target set.