Watch: See the rugby ball that retrieves itself

This video has been doing the rounds on the internet today and we can't figure out whether it's a genius invention or an elaborate prank.

A female rugby player is given a ball to kick between the posts.

Before she does, She's told to tap her smart watch.

The kick complete, the ball then finds it's way back to her by itself, like a dog returning to an owner after hearing a whistle.

If it's real, it could revolutionise rugby training for kickers around the world.

If not, then someone needs to develop it ASAP!