A system for exchanging GPS or other position data between wireless
devices for purposes of group activities, child location monitoring, work
group coordination, dispatching of employees etc. Cell phones and other
wireless devices with GPS receivers have loaded therein a Buddy Watch
application and a TalkControl application. The Buddy Watch application
communicates with the GPS receiver and other wireless devices operated by
buddies registered in the users phone as part of buddy groups or
individually. GPS position data and historical GPS position data can be
exchanged between cell phones of buddies and instant buddies such as tow
truck drivers via a buddy watch server. Emergency monitoring services can
be set up with notifications to programmable individuals in case an
individual does not respond. Positions and tracks can be displayed.
TalkControl simplifies and automates the process of joining talk groups
for walkie talkie services such as that provided by Nextel.