Patent ID: 8712441

Claim:
A method of sharing position data between a first device associated with a first user and a second device associated with a second user, the position data including first position data indicating a first location of the first device and second position data indicating a second location of the second device, the method comprising: receiving, from the first device, a first request to set up a position-sharing relationship between the first and second users; transmitting a second request to the second device, the second request inviting the second user to accept the position-sharing relationship; receiving a message from the second device indicating acceptance of the position-sharing relationship; establishing the position-sharing relationship responsive to the acceptance; transmitting the first position data to the second device and the second position data to the first device; receiving updated first position data from the first device and updated second position data from the second device; and transmitting the updated first position data to the second device and the updated second position data to the first device; wherein the second user is one of multiple buddies of the first user, each buddy being associated with a corresponding mobile device, including the second device, the method further comprising: noting position data for each of the mobile devices, including the second position data; calculating a center of gravity for the position data; and displaying the position data for a subset of the buddies based on the center of gravity.