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by ColinWright 4456 days ago
The second method listed is effectively the same as the U/AIS system that ships use[0]. The "U" stands for "Universal", from which we can deduce that actually only about 60% of ships actually use it.

The technology already exists, it just needs to be mandated for aircraft.

[0] http://en.wikipedia.org/wiki/Automatic_Identification_System