Patent ID: 7737830

Claim:
A system for providing tracking information comprising: a first mobile computing unit; a second mobile computing unit; a base unit a wireless communications link to transmit request data messages from said first computing mobile unit and said second computing mobile unit to said base unit and to transmit response data messages from the base unit to the first computing mobile unit and said second computing mobile unit; wherein said base unit receives said request data message from said first mobile computing unit for geographic position information of said second mobile computing unit, wherein said request data message includes data identifying the first mobile computing unit and data specifying a request for tracking information, obtains a current position of said second mobile computing unit, and provides said response data message to the first mobile computing unit indicating said current position of said second mobile computing unit, receives said request data message from said second mobile computing unit for geographic position information of said first mobile computing unit, wherein said request data message includes data identifying the second mobile computing unit and data specifying a request for tracking information, obtains a current position of said first mobile computing unit, and provides said response data message to the second mobile computing unit indicating said current position of said first mobile computing unit.