An ex-NASA engineer built a dartboard that lets players hit a bullseye with each and every toss.
When a player throws a dart, the board tracks it using optical sensors and then moves quickly so that the dart hits the bullseye. It’s amazing. You can’t miss.
Of course, you need to be in the general vicinity of the center for this thing to work. You can’t throw the dart backward. But if you can get the dart anywhere near the board, you will win. (Gizmodo)