Originally Posted by
Mark in CA
"This extends ADS-B signals beyond line-of-sight to facilitate reporting the position of aircraft equipped with ADS-B anywhere in the world, including oceanic, polar and other remote areas," the U.N. International Telecommunication Union (ITU) said in a statement.
U.N. agrees on radio spectrum for global flight tracking
Now all they need to do is find a way for the ADS-B to be kept powered on when someone wants to 'vanish' the aircraft.