In short. there is no need for clever devices, new avionics, gizmos from Radio Shack... ALL aircraft have tracking capability. All that is needed is regulation that mandates aircraft operators use the tracking capability that is already on the aircraft.
One also needs to consider the MEL aspects of whatever is proposed?
Do the pPrune arguers for "real/live tracking" really want to spend hours grounded, or even diverting, because the system will not work/logon? The moment this gets elevated to "compulsory" this becomes a serious concern. If a satellite or 2 are lost, or find a more lucrative market for their bandwidth, are all airliner flights limited to times/areas covered by remaining capacity?
NoD