I just read this article . From the article at the very end -
ESA claims that the new tech, which may eventually require an Iris terminal/transponder to be attached to every plane in European airspace, provides "4D" flightpath control. Prosaically, this means it provides four coordinates, locating each aircraft according to latitude, longitude, altitude, and time—which ESA says "will enable precise tracking of flights and more efficient management of traffic."
While it would be known in time whether it truly works as advertised or needs kinks to be worked out, something like this should have made events like 'disappearances of MH370' much more rarer as rescuers would have much more precise locations to search in case of any untoward incident.
The simplest way to think of it is like the radio and Uber cabs which constantly ping back to the home location so they know where the drivers are at all times. Just an expansion of the idea at a somewhat ridiculous height :)
Do people think it should improve the safety of the aircraft or it would be another tech. that is just as liable to fail as others ? Hopefully people keep an eye on this technology and where it goes. If anybody knows any similar technology, feel free to share as well.