06690940 is referenced by 178 patents and cites 5 patents.

A system for selectively disabling use of at least selected features of a stand-alone electronic device under a predetermined set of conditions. The system establishes a state of the set of conditions as being satisfied or unsatisfied, communicates the state to the electronic device, and disables the selected features if the state is satisfied. In one embodiment, the system may be advantageously be used to prevent vehicular accidents by at least partially disabling non-emergency use of a wireless telephone in a moving vehicle. In another embodiment, the system may be used to disable features of an electronic device within a predetermined area having a boundary that is independent of a communications network cell.

Title
System for selective prevention of non-emergency use of an electronic device
Application Number
9/668099
Publication Number
6690940 (B1)
Application Date
September 22, 2000
Publication Date
February 10, 2004
Inventor
Charles F Brown
119 Warfel Dr., Delaware City
DE, US
George W Brown
27 Deer Cir., Bear
DE, US
James W Brown
24 Neurys La., Newark
DE, US
Agent
RatnerPrestia
US
IPC
H04Q 7/20
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