Slight delays or inaccuracies in the GPS data meant the labels sometimes strayed, but usually only by a few meters from the intended location.

NHK expects SkyMap to be useful during live news, especially when covering earthquakes.

The broadcaster frequently relies on helicopter images during immediate broadcasting after quakes, and the location shown in the live video is sometimes not immediately obvious.

The system was demonstrated alongside other recent innovations by the broadcaster.

One, called Twinscam, provides a new view of watersports like synchronized swimming.